I'm just now getting back into riding. Back when I used to ride, I jumped over a tree root and my foot slipped off the pedal and my front sprocket went right into my achilles. I'm definitely going to try out some clipless before I start getting into any crazy riding.
A couple buddies of mine have Crank Brothers egg beaters, they really like them, but are telling me I will definitely fall a few times before I get good with them.