Originally Posted by
WideScreen
Actually, maybe unless wearing heavy army boots or so, I seriously suggest keeping your shoes on. You need something sturdy on your feed, in case you need body-forces to enforce "something", let alone, protect your feet against all sharp metal in and around the foot well. Most shoes "float" nowadays, so won't impact your floating (significantly). Not to say, when you land in water where you simply can stand, no need for shoes removal for the non-float-issue.
I would opt for shoes off in a water landing. Purpose is to maximize power of your swimming kick. Especially if you end up in water with arm/torso injuries etc your ability to kick can make the difference between getting regular breaths of air vs gulping water drowning in a matter of seconds. For similar reasons, I would prefer to shed overclothes.