I tried vaping etizolam on foil before and it did work but wasn't very efficient. I remembering being able to vaporize a big amount - enough that I would have blacked out had I taken it orally - but instead it was just enough to get me feeling decently benzoed but only for a very short while - it wore off very quickly. And no blackout. So it seemed to work via vaporization just was a huge waste of material. I dont know, maybe my technique was off?
I have no clue if it'll work with clonazolam, just be careful ie start slow and be wary of delusions of sobriety.