For non-winter riding my bikes have the dual-sided platform/spd pedals. 95% of the time I'm going clipless, but it's nice for the occasional time I'm riding a short distance over lunch and don't want to bother changing out of my work shoes.

My winter bike is set up with platforms. Most of the time if I'm on that bike it's cold/snowy enough that I'm wearing my boots, so platforms work well for me in that situation. My winter bike is crazy slow anyway with the studded tires, so losing a little more efficiency isn't a big deal to me.