Hey don't knock it till you've tried it.
I've vaped benzos dozens of times. Particularly useful when you've done a bunch of stimulants and its 4am but you have a meeting at 8am and need at least a few hours of sleep.
Requires benzos in their pure powder state (definitely would not attempt with pills, doubt that would even work).
Some benzos don't vape well though, such as pyrazolam. Also, from what I gather, the 7-nitro benzodiazepines (like clonazolam) don't vape well.
The most fucked up I've ever been on benzos (that I can actually remember, ie non-black out) was after smoking a pile of etizolam powder (25mg+) in an attempt to kill an n-ethylhexedrone comedown. I was stumbling around like a drunkard, sort of moaning and weeping about my life, feeling sorry for myself, like your stereotypical sad drunk (mind you, I've never ever experienced that from any amount of alcohol, just seen it in the movies or witnessed drunk women do it). You know went drunk girls are out somewhere, and they're so fucked up their crying and moaning about god knows what -- it was kind of like that (something ive never experienced before). I was so fucked and wobbly that my girlfriend had to help me to bed, I could barely walk (

just imagine all the shit she's seen as negrogesic's girlfriend, she could probably write a book about it -- not that she could, she's probably got the reading level of a 9th grader

).