Well, for those that are uncomfortable with the idea of a triple sided pedal, I'm also toying with a "clipless toe clip" system.

Basically it's a toe clip mounted to the pedal via SPD cleat. I'm sure the brilliance of this idea will be apparent after a little thought. You can use regular shoes and you can cinch those shoes down as tight as you like. To get out in an emergency, just twist your foot and the whole shebang comes loose.

If anyone steals that idea, I will be pissed.