[QUOTEI'm considering converting to speedplay frogs; a bit more expensive than candys, and i don't think they're double sided. Anyone else commuting on them and if so what do you think of them?[/QUOTE]

I like my Frogs for any type of riding. Clips in on both sides of the pedals. No platform side. More rotation than spd's so kinder on the knees, and easier to get in and out of than my Speedplay Light Action pedals.
However, the cleats crunch along the ground when I walk on them in my Specialized MTB Sport shoes. So I still walk funny, but much better than the Light Actions with pure road shoes.