Wow, I can't believe what a minority I'm in.
I basically vape nonstop, every waking minute, and never even consider where I am when I'm doing it. I've only rarely been asked about it, and have never had a negative reaction to it. I don't even realize I'm doing it most of the time. That's probably why I don't get flak about it, I act like it's no big deal and people must pick up on that.
This summer, a car crashed through a barbwire fence on my farm, and a police officer came to the house to tell us about it. I was talking to her and vaping away without thinking about it. I use a crazy looking tank mod, and she kept giving me odder and odder looks until I clued in and explained it to her. I made some jokes about what she must have thought it was, and it was promptly a non-issue again.
My girlfriend also tells me that I'm intimidating looking, so that might account for the absence of complaints too, I don't know.