When I was on Bupe I always felt like THC distracts from the fine high that Buprenorphine is able to give you even when being on low maintenance doses (I was on 0,5-1mg a day).
Of course the THC still gets you high but I never felt a synergy between the two. Not as contraproductive as Opioids+Alcohol but still not that desirable and I am a daily smoker but only in the evening.
Just my 2 cents.
Hate to be a stickler, here, but if you're getting any kind of "high" on Buprenorphine you're probably only making your habit worse by being on it.
I don't have a super-fuckin-crazy tolerance or anything, but bupe has always lacked certain fundamental effects of many typical opiates, IME, and I only use it when I absolutely CANNOT be in withdrawal for functional reasons...but even then it didn't do much for pain or anything, and id often end up taking a couple of aspirin to help it out.
Onto the subject of Marijuana and Buperenorphine; In my experience, I enjoy smoking good herb, particularly on suboxone. This differs with how I am on typical opiates, in which case I often wait 2+ hours past my peak to smoke, as to not overpower the subtle, but potent opioid stimulation.
With Bupe, since there is no "high", IME, I smoke way more often..usually starting in the morning, which is QUITE unusual for me when on Norco or something.
I don't know for sure, I just assume my Marijuana use fluctuates so much between bupe & typical opiates, because the buperenorphine seems to offer much less pain control, and less positive mental stimulatioin than traditional opiates/oids.
The last time I felt a supposed "high" from bupe was WELL before I began taking painkillers on a 2X(+) per day frequency (low dose A.m., huge dose P.m. lol), and since then bupe has been little more than an annoyance to avoid annoyance, if you will.
I don't like taking Bupe, because I don't like taking long acting drugs, narcotic or otherwise. That being said, bupe is far superior to methadone, IME, I would rather withdrawal for 8 weeks straight than touch methadone again.
I really miss how it was back in the day though, as recent as 3 years B.T. (before tolerance, lol) I could whiff the tiniest, I mean TINIEST line off an 8mg suboxone (probably about .5 milligrams) and I would be in the midst of some serious Mu agonism, I remember once riding with my friend to pick up some dope late at night once, it was late enough he had to coax me out of the house with the promise of some sub. So on the way to his connect, I sniffed maybe .5-1mg off the center console, not even powdered all the way, chunks, etc...
I didn't even expect much with my then-growing tolerance, but boy, by the time we were on the return trip I was getting warm, and when I got home, I was so completely pinned that I stayed up all that night feeling seriously amazing (hard to imagine now lol). I was up before my Dad that day, made a good breakfast hashbrowns, eggs, the whole 9. Then I had to drive an hour to school, so I popped my Rx'd Adderall (also a thing of the past) and man, I remember having a good day that day, just feeling great. The buzz from that bupe was as strong at 3:00pm the next day as it was at midnight a few hours after dosing.
Needless to say when that Adderall started wearing off, having not slept that night, I was pretty impaired. But I survived, drove all the way home safe without incident.
That's the problem with bupe IMO if you have a really low tolerance it's fantastic, a novel opioid. HOWEVER if you have a tolerance of more than like....idk 50mg hydrocodone or equivalent per day, I seriously doubt you'll get many positive effects from bupe, besides the relief of Withdrawal symptoms, which can really be a blessing sometimes. Especially for the addicted population not in pain, in which case buperenorphine is an invaluable resource.
The key is probably early intervention....and a whole lotta luck, biology wise, etc...
TLDR; Buprenorphine & Marijuana are a fine combination, non-tolerant users be cautioned to watch out for profound hypotension(bupe always seemed to lower my BP more than some typical opiates..could be a tolerance/cross-tolerance issue.) so just don't stand up too fast, or drive please!