Many people don’t realize that “junk” carry has been around for a very long time, so that makes Ernest kind of an AWIB Hipster. He was doing it before it was cool. Only recently has it seen a resurgence in popularity as holster options continue to grow.
Taking your guns on airlines can be a nerve racking experience, but by being prepared you can take a lot of the guesswork out. TSA Regs: http://www.tsa.gov/traveler-information/firearms-and-ammunition