The thought of having my toes unprotected whilst on the bike terrifies me, honestly, I cant sleep at night because of it.
A guide in the Alps we met when riding there had his foot all bandaged up. He'd been going down a descent, and ran into a motor biker. The motor bikes brake disc had cut most of his big toe off, and he'd had a nice pair of normal SPD trail type shoes on.
Can't you just get a pair of sandals and bolt cleats onto them?