I could care less what you look like if you're getting a ride AND there is no way to identify you as a pilot or FA.

I saw it today - flip flops, jeans and carry ons clearly marked "CREW", plus the conversation with the gate agent sealed it.

I see a "CREW" bag and flip flops, that just reeks of unprofessionalism.

Secondly, and more importantly, it's a safety issue. If the plane does go down, you're trained to assist and aid the pax who don't have a clue. You're not going to be able to do a very good job with bloody stumps as the flip-flops get trashed by the strewn metal.

However, the GF of the guy non-revving had the appropriate daisy-dukes attire.