If my reply is a problem because it is posted in the AltSmoke sub-forum please feel free to delete, no hard feelings.
I recently flew with my Protege and my Prodigy v2.
Flying out of JFK I actually put them in the bin with my laptop and cellphone - right out in the open to show: hey, I'm not trying to hide these and I got through no problem. I DID take my cartos off. Wasn't even questioned about them.
Flying back out of Orlando I did the same thing and probably would've gotten through no problem again but I had cartos with my in the bubble like packaging and they actually questioned those and not the PVs themselves
I explained the cartos went on my "nicotine inhaler" and I was good to go.