Thanks you. I've researched this topic to the best of my ability in the hope that the whole norbuprenorphine thing could be proven true, but everything I've found has been inconclusive, or contradictory. I've even heard sme sources say that norbuprenorphine would most likely be dysphoric, though I forget the exact reason why, I'll have to look it up later.
In the end it doesn't matter whether it's norbupe or bupe that's getting you 'buzzed'. As long as you stay on a low dosage, you'll feel the drug way more.