I've flown a bunch of times with my ProVari, or vMax etc.. never had a problem. I frequently fly into small towns too (like 5 terminals and one airline) and the TSSA guys usually ask, I smile and tell them what it is, and allow them to search my stuff if they ask. Never had a real problem though.
Just keep your
juice bagged and under their required volumes, batteries safely separated so they dont short! I even vape in the restrooms, just so I dont draw negative attention or cause irritation. Go take a seat and vape while listening to my iPhone.
best of luck!
this anti
vaping aggression wont be tolerated.. man..