Yeah... So that sucks. Lumping it in with analog cigarettes is as ridiculous as categorizing inhalers with them as well. Vapor puff, inhale via mouth for dosing... For places where I suspect arguments from an ignorant party, I generally stealth vape... hold it casually near my mouth, almost not paying it any attention, as though it were a pen I were chewing, and hold it in until there's hardly any vapor, and exhale tiny amounts at a time to ensure there isn't any. This is how I survived the symphony and airplanes without a single double-take. It was perfect! the "duck down to tie my shoe/pick something up/unplug my phone" is always a good escape, but the bathroom is the good standby. Really, if they can't tell if you vaped in the stairwell, how close to cigarettes can they be?
My wish for the future is for employers to do the math on the amount of time spent now indoors and not on smoke breaks, with productive employees, and healthier, easier-breathing ones at that! I calculated myself at spending about 2 hours a day doing nothing but smoking before. The amount of work I get done now is insane, because I'm not flip flopping between nic fits which are hardly productive, or breaks, which are worse.
Think of us as the trailblazers of a movement, that someday will be accepted and widespread, rather than "huh?!?!"