A tip for anyone traveling with a PV, carry it with you through security. I accidentally did so accompanying a relative and they were pretty interested in my Buzz Vari-Volt! A quick explanation as to it's purpose and why it had 'chips' in it resulted in a grand total of of losing ~3 minutes of time while the dogged sniffed it (I cautioned them not to let the dog lick it or it might get sick from the nicotine), they ran it through the scanner again, and off I went after a quick demo. Had I not been there to explain it, it would have been confiscated by them just to be on the safe side. You have to understand that without evidence to the contrary, it looks just like a little explosive device. A strange connector, 'improvised' wiring, non-standard power cells, lights and buttons. The only thing it's missing is the explosives and we normally travel with little bottles of strange liquids too... Be a positive ambassador! Let them know what it is if they ask and how it works. Don't forget the length of time you've been off analogs too. You leave not only with your PV but with at least one more person more informed about them and knowing that e-cigs are a safe(r) device.