Do you guys bring a vape with you when flying? Obviously airport security is a bitch nowadays, many vapes could be mistaken for a bomb or something dubious. Making sure there's absolutely no residue is crucial as well. Glass vapes clean up well but are fragile. The PD seems like it might be a good candidate; durable, discrete, the tubes can be soaked in iso. I'm wondering about the unit itself; shouldn't be much buildup down the heat exchanger tube (think the top of the ceramic heater blocks anything from falling deeper into the unit)... could vacuum it out and swab with an iso soaked q-tip, though the crossbar would block that to some degree. Probably be fine 95% of the time but I'd be pissed if some jerk decided to break it open or pull a Pythias Brown. Think marcuss brought his Vapolution to the NL. Anyone?