Have you checked out the Crank Brotheres 'Mallet' or 'Acid' pedals? Surely those have a more usable/comforatable platform if you intend to occasionally use regular footwear to pedal your bike.

I'm quite surprised nobody has suggested them as an alternative to the 'Candy' pedals which have a quite minimal platform in comparison and dont look to offer the surface area or comfort level one might expect if they believe they will need a 'regular platform' at least part time. The Candy's strike me as the type of platform you will use on infrequent occasions for very short stints.

I have the Mallets on a bike I've just put together and although I can feel the clips through my regular soled sneakers, the generous platform doesnt make it at all uncomfortable.

Price point might be an issue, I have the lower priced model (Mallet 1) with the ss kick plates. I'm not 'hard core' so the price for the higher models I simply couldn't justify, rather spendy pedals in general but superb quality.