SWIM would not suggest smoking this substance, except the guinea pig is an experienced psychonaut with years of experience with controlling compulsion. That's not my case, I'm only learning... SWIM learned and read quite a bunch of informations as always with a new substance SWIM discovers... that wasn't enough.
SWIN can quite well remember my recent first encounter with this substance. That day SWIM started taking bupropion (brand: Wellbutrin) and as usual, SWIM tweaked doctors recomendations (1pill whole) and took 2 150mg pills at 07:30, 1 crushed and 1 whole. SWIM needed a pick-swim-up quickly, because of pressure at workplace - bupropion isn't the right thing for this, but it can move our wheels enough to do at least something, but it makes you more "stupid".
SWIM came home instead of going on lunch, picked up SWIM's envelope hoping in "miracle", because SWIM was quite lethargic last days and had lots of work (3 tasks due that day + 5 tasks after work time, including home cleaning after few weeks!). Material: white clumpy powder with hint of orange and chemically-pharmaceutical flavor, density (g/mc3) looked larger then other stims, little weighted much.
SWIM used 10mg nasaly at T~=11:30 and after not feeling much at T+0:20, SWIM used 10mg vaporized from small light bulb at ~11:50 (about 50% volume of material left as slightly non-polar/alcohol soluble). More or less slowly the effects started to build up, ~50% at T+0:25 (resting pulse: 87bpm), 75% at T+0:40 and 100% at T+1:20.
Vaporization result: Onset 1min, come-up to 50%: 5 mins, peak at: T+1:00 to T+1:30. So vaporizing the material makes it feel hitting fast, but the effects build up still slowly. The guinea pig can feel getting not enough, but it should wait at least 30 mins, SWIM recommends 1-1.5hours, here is why:
OK, 5 minutes into the vaporization experience, SWIM ended up cleaning stuff and doing it in way, which were fun to explore, but unnecessary, long taking and stupid (cleaning the residue in bulb vaporizer with: water, different alcohols and CHCl3, watching how fast the residue melts - stupid, because SWIM had to get back to work). After SWIM delayed leaving home and returning to work for 5 more minutes a few times, he realised he is little bit overstimulated (unorganized, compulsive and not self-managed).
This condition was worse then when overstimulated due to N,alpha-DM-PEA (short: NADMPEA, serious SWIMs don't have to be chemists and even not clever to figure out, what it should mean). SWIM autosuggested, that he will repeat checking the clock, until everything done in time - this helped self-managent enough, but not fully - he got again into a few unproductive activities. SWIM realised, he should wait with profesionalism until peak's over and catch up "the last train", if there will be some.
The reasons very many: Weather was very hot, SWIM had to drink enormously (1l/h !!) to maintain dehydratation at bay, heart rate tend to raise in second(s) to subjectively 3 times that of resting, pulse was irregular, making trouble to count beats and the big east problem were the obsessions. It was easy to get distracted without reason (that brain for those shitty ideas

, distraction was uncontrolably followed by the obsession to realize the idea, but compulsive behavior was stopped almost every time. SWIM can realize that anyone even a bit less experienced, or using a _little_ bit larger amount, would not be able to handle compulsive behavior.
SWIM used 0.125-0.25mg Alprazolam sublingual (having little-to-no tolerance) to ease periferial abnormalities in 2 separate doses at ~T+1:30 to T+2:00. SWIM realised end of peak at T+2:30 (resting pulse: 84), when he still had obsessions to continue in non-productive activities, but now more organized, and more wanting to rework, what's done. About 15 minutes after peak ended, SWIM decided to switch to professional self-management ASAP, just after SWIM brings things "usable for their purpose" state. SWIM stressed, that peripheral symptoms were still equally unpleasant, or better to say "looking bad", but the improved.
SWIM had little/ignorable nausea from T+0 till end of peak (NADMPEA: none). SWIM experienced little-to-none anxiety after peak (NADMPEA: none-to-little during peak). SWIM had problems with some short term memory, resulting from jumpy unproductive ideas, actually causing much of the desorganization (NADMPEA: organization improves greatly at small ammount, with larger it becomes less-but-comparable). SWIM planed to bioassay 4-MMC the same day at evening (outdoors, far enough from rest of package, to get back to baseline, what should stop expected compulsions), he was unsure. It would be needed to dig up the result of that day from logs with SWIM (is anyone interested?).
SWIMs conslusion:
MDPV is only for hands of very experienced stim-users (SWIM had little-to-moderate experiences, but would suggest at least: proven will to resist crashes and withdrawal effects from and ability to control use of MDMA, "NADMPEA", alcohol (real control, abstain >4 weeks), cannabinoids (real control, abstain >4 weeks) and GHB). SWIM saw components of all of them in the experience. No gifts to friends, no street exchanges and NO parties (unless in clearheaded, intelligent and conservative manner... called brainstorming sometimes).
Handling it needs same anti-compulsion precautions as substances known for causing compulsive behavior (SWIM suggested the same as with Zolpidem (and planned for 4-MMC): bioassaing far away from stock and civilization, but counting with the occurrence of emergency, sober sitter, eliminating probable causes of compulsions - most house equipment, especially hazardous/sharp). This is true for first few experiences in any user, for doses >20mg for any user and for any dose for people with any history of compulsivity or with >=slightly addictive personality (even before becoming adult-and-responsible).
Vaporization and smoking is NOT advised, until you get experienced with stims in general and especially this particular substance. SWIM left a note for those which resist on trying it (Vap.route): Only in really CONTROLLED ENVIRONMENT! Make sure you administer it _slowly_, SWIM told me, that the residue doesn't looked like impurity, but more like created in vivo by heat - that means it decompose to toxic shit very fast. Use a bulb-vaporizer, it eliminates losses, start by melting material, not letting it boil, increasing the temperature if really needed. As soon as vapors are seen, bulb should be removed from heat source.