I run double sided pedals on my commuter because I love being clipped in. It does make an appreciable difference when climbing or trying to maintain a high cadence, which I do regularly on my commute. I use my 10 mile commute as an opportunity to train so I really prefer being clipped in, but during the really cold and snowy months and the really hot and humid months I change my tactic and I just poke along during my commute.

I commute with my clip-less shoes about 75%, the other times I am either wearing heavy winter boots or sandals.