I'm in a pretty large metropolis here as well. I would say within the last 18 months I have noticed more and more vapers in the wild, and drop in analog users in the wild, at least in my area, kind of higher income area. As far as
vaping indoors, I am generally courteous, say at a restaurant, being I work in the industry, if I need a vape I take it outside or into the restroom. Other places, say WallyWorld, I'll vape up to the door, then put it away and go about my business. Those that do see me, I've got a couple odd jaunticed eyes here and there, yep, same area, the "Higher Middle to Lower Upper Class" crowds, 10% still have a holier than though issue, but all in all, due to how many people I see vape in the wild, its a pretty common site, though that is just from my perspective. When I do get asked, its generally as a concerned 3rd party with a family member they want to quit questions or co-workers that analog asking how vaping is in comparison.
Answer what questions I can, after that, pass out a business card for a local B&M shop with the ECF address to try pointing them in the right direction.