Just to add my moderate voice to the a-PiHP didcussion:
I used 1g of it, in over 5 years.
I only snorted it. In doses of 10-25mg per line. Never used more than 4 lines per session.
It was a nice upper for me, which got uncomfortable rather quickly if taken in too high doses / with too many redoses.
I didn't experience anything very bad with it. I didn't get addicted.
I think inhaling it is way more dangerous, when it comes to craving.
To me, it was a useful recreational stimulant for raves, which should be treated with respect.
Similar to Ethyl-Hexedrone & Ethyl-Pentylone.