I just put Frogs on my Gunnar and love them! I am still getting used to them but my legs and knees do seem happier with them than the SPD pedals on my LHT (platform/SPD on one side). I liked the SPD side of those pedals but hated the platform side as I couldn't keep my feet on the pedals. Give me BMX pedals any time over those.

I am only clipping due to knee issues - I've ridden a gazillion miles on BMX pedals - you do not HAVE to use them unless you want to do so.

I do love my Frogs though. I feel like I've a more dynamic connection with my bike using the Frogs than the SPD pedals, can't explain it unless it has to do with the increased float.