It's ok snorted, basically feels like most other pyros do? Not really functional unless very small amounts are taken occasionally, even then there are much better alternatives for this.
pyros have all felt so similar to me that it's hard for me to make any meaningful comparisons. It does have a bit of a knarly dirty/bitter taste to it that hangs around in the throat and sinuses for awhile afterwards, it's not pleasant but not too off putting either. As well as the typical semen smell once it's had a chance to hang around in the moist environment of the nasal passage for a bit.m (or when vaped and, I imagine, when freebased it probably stinks to high heaven) Wouldn't recommend snorting a line before any close conversations where the other person will be able near enough to smell your breath.
I tried a-pcyp very briefly but not enough to really remember much. Sorry, I'd like it to try it again at some point for this reason.
If you are at all worried about it's compulsiveness then I'd advise staying away. Its just a typical pyro stim and with that all that entails. Large doses are quite compuslive, when I vaped a huge pile quickly I had no control over my use until I ran out. Just like every other pyro.
In small amounts with this one I have had moderate success at stopping myself from taking more, this was almost always impossible in the past for me with previous pyros. Whether this is an actual property experienced by others I cannot say - I don't know if maybe both myself and my reaction has changed over the years as I'm much more cautious with my approach whereas in the past i was basically like "fuck it" and just let the madness ensue.
Trying to use it responsibly is just an annoying tight rope walk where all your doing is thinking about indulging in more because that's what pyros do. So you spend most of the time arguing with yourself as to why you want to do more but shouldn't. If you want to have fun/overindulge then by all means grab some and turn on the porn or whatever, otherwise I'd say pass this one by.