For what it's worth, I have a version like this but it has a flat platform on one side. I use it on my commuting bike and occasionally ride the platforms with regular shoes when running errands, going to dinner, etc. Getting into the SPD side is easy so I don't feel the need for double sided SPD mechanisms. (I clip in and out quite a lot on my commute and they are weighted so that the SPD part is angled up when off of it.) But I guess if you always will be using cycling shoes perhaps these will be a bit faster to get into sometimes.