Originally Posted by
Kapusta
I can appreciate the benefits of foot retention for fixed gear, but the OP did not say anything about riding fixed gear.
I see more of a safety benefit with fixed gear than freehub. Warming up a the San Diego Velodrome, a teammate accidentally unclipped while doing jumps. Since the natural reaction is to stop pedaling, the fixed gear carried him up and over his handlebar in a flash. I barely missed running over his neck and he had to hold his skinsuit together to avoid letting his dangly bits fall out of the gash he ripped in it.