I've sold plenty of e-cig gear to a few TSA employees who actually work at Philly International. One of my best friends is a Behavioral Detection Officer there for TSA. From stories I've heard about TSA screeners I'm surprised the majority of them can put their shoes on in the morning let alone guard our country from terrorism. My buddy let's me know when there are security updates about e-cigs. There haven't been any in a while. He also suggests putting everything into separate zip lock baggies and making them accessible on top of your baggage or even in the "change tray" when carrying on. Also, don't ever put anything valuable in your check baggage. Stuff goes "missing" more than you would even believe...
Next time I fly, I will have to try the zip lock bag. I guess making it easily accessible makes it easier for them to inspect all your things