I've flown numerous times in the US with my GLVs which look rather ominous to the uninformed (and even some vapers) and even though I have a MedPort insulin bag filled with cartos, carts, batteries, and two extra "empty" GLVs I've only been interrogated and shortly delayed by TSA once and that was at LAS with "heightened security" levels after Bin Laden was killed but before it was made public.
Believe it or not, I've found that the more conspicuous you are with a PV, the fewer questions are raised. I put all my e-liquids in the 7 oz. Zip-lock baggie and put my "live" GLV in the bin with my cell phone, laptop, and such.
An agent will often ask what it is and when I tell them it's a personal nicotine vaporizer or high-end e-cig they don't bat an eye.
Good luck and have a safe flight!