I have the double, SPD on one side and platform on the other. I have never had any issues with it. The cycling shoes I use are the Shimano MTB boots, they don't care which side the pedal lands on. When I am wearing my Sperry Topsider, if the pedal winds up on the SPD side they can handle it until I get a moment to flip the pedal.

Yeah, it is true, sacrilege, I don't wear Lycra every time I get on a bike, I might have on 511s or Dockers/slacks and Sperries and a nice cotton shirt. Commuting is not exercise, it is transportation.

Now, when I ride for fitness and use real cycling shoes, I would as soon not have SPD at all, I like the Time or Shimano with the larger mechanism.