Makes perfect sense actually. If I'm withdrawling from the bupe wouldn't that put me at something like a -3 though? (I'm not trying to argue, I like to debate)
It can. However, buprenorphine is a rather sticky drug in the sense that it is a very highly protein bound drug, and it has a very long half life (it lingers in your system for some time). Therefore, you won't get to the "-3" as quickly when coming down from buprenorphine as you will with heroin.
I have definitely used heroin when I was on buprenorphine (either I waited till the next day, or would wait at least 8 hours after the last buprenorphine dose) and I still got adequately high. However, the longer I was on buprenorphine, the less and less appealing heroin became. I think it had to do with the fact that levels of buprenorphine build up in your system after dosing a few times, and after it builds up in your system, it's not as easy to have heroin and use it successfully while still being able to switch back, and comfortably so.
I guess what I'm trying to say is, yeah, you can definitely do it, however I think you'd feel better about yourself (and better in the long run) if you didn't use heroin. However, I'm not going to say "don't do it" because I know how much fun can be had while on dope. If you want "one last time" with it, and can honestly keep it to that (not many people can) then have a blast. However, you don't want to decrease the efficacy of buprenorphine as a maintenance drug by planning to use heroin again (if you are truly trying to recover from heroin abuse, for example); so make sure you have no qualms about going back to buprenorphine after the fun is over.
I guess that's the best advice I can really give you, as I had a month or two (or three) where I'd switch from buprenorphine to heroin and back and forth again...until I slowly phased out the heroin part and stuck to the buprenorphine part. I guess as they say, I got really sick and tired of being...sick and tired.
Any other inquiries? I hope what I have to offer doesn't sound "critical", it's just the advice I could have used when I was chasing heroin a lot.