A mate of mine (ag pilot) ended hung up in a tree on fire following an engine failure. Because of the heat he wasn't wearing his overalls, however he still had his gloves on. I understand he had to reach forward into the fire when he released himself before climbing out. Result was serious burns to his arms that required skin grafts, but his hands were fine.
The last time I wore a tie around an aircraft was about 20 years ago. Due to a flat battery I was hand started the engine. Because of the configuration of the engine and propeller, I was pulling from the front. As I stepped back when the engine fired my tie was being drawn towards the propeller. I haven't worn a tie around an aircraft since.