I don't understand all those who get on the aircraft and feel the need to slob out immediately. Their shoes come off, they seem to have half their clothes off etc.
Me personally, I never take my jacket off until we are safely airborne. If there was a need to evacuate the aircraft I would prefer not to be doing it in my sock or bare feet. The jacket also ensures I have my vitals for afterwards.
I never take my shoes off in flight. I don't want other people pi$$ all over my socks. The washrooms are pretty disgusting at times and when you as the cabin crew to clean them they can get really uppity about it.