I'll be honest--I live in suburban MD--less than 15 miles from DC and Baltimore--one of the most densly-populated high-tech corridors in the US, and the only vapers I've seen in public are people smoking cig-alikes like V2, BLU or Volts. I saw a young woman in a pub this weekend using an e-cig. I saw TWO men using e-cigs at the MD Renaissance Festival a week ago. I've seen a few people in the mall using them.
But I have never seen anyone using a mod in public, unless you include the staff in the local vape-shops.
You'd think that with the massive concentration of geeks, techies and gadgeteers in this area (working for NASA, the DOD, and the Military), there would be Provari's, box mods, GGs and everything else everywhere you looked, but I just haven't seen them. I'm sure they are there, but all the people I've seen vaping in public in these parts seem to be using cig-alikes.
I'm working to change that--I carry my Acrylimax on a lanyard EVERYWHERE I go now, and I am prepared to sing the praises of vaping to any and all who may inquire...