Maybe I'm gonna be the odd man out, but there's no way I'd ever use anything that stuck my feet to pedals on a bicycle. Second nature or not, the moment it takes to unclip could be the difference between a life and death situation (stopping for a car...) or breaking an arm.

I guess I'm just of old-school "BMX philosophy;" get some "bear-traps" and hope your shins don't make contact with them.