I think it is a general policy for airlines that ecigs cannot be USED on a plane, but that its ok to have them in your carry-on. As long as the word "used" is included I don't have a problem with that. Most do not know about ecigs, and if I didn't, I would not want someone next to me sending out billows of some strange vapor. Would make me very uncomfortable. Forget about it looking like smoking, it would look like SMOKE, which I doubt anyone would want to see in flight.
At this point there is zero problem with just having them on your person. I've had my bag thoroughly checked several times in airports, and I always travel with at least a couple weeks worth of gear, and they didn't even raise an eyebrow.
However, if some strident idiot insists on
vaping on board and starts yelling about it not being smoke and their rights are being violated, then we may have to kiss even having
vaping gear with us goodbye.
I do agree that the feds have enough problems right now to spend time on what should be a private company policy matter.