The M424s are good pedals. I was referring to his comment of those type pedals being "versatile enough to use on a track" as I would not recommend that pedal for the track.

I too have used similar pedals. Shimano has/had a pedal that is like a BMX pedal with a clipless middle. It was great for MTB use.

Edit:

And everyone has that ONE zero MPH fall using clipless. It just happens