When I fly, I carry a Blu in my carry-on. TSA confiscates anything else. I also use them for back-up when working on location.
TSA confiscated your vaping gear? Dude, I fly all over the country for work and carry all my gear with me in my carry on (except for my juices...the majority of which I check). I have never...never...had an issue with the TSA. I'm talking tubes, tanks, RBAs, eight AW IMR batteries...the works. Detroit, Atlanta, Tampa, Dallas, LAX...you name it and I've been through there. The only comment I've had is "Whoa...that's a lot of metal."
Did you get your gear back? If not you should really see somebody about that. Whomever consfiscated it was sorely mistaken.