Question regarding Clipless pedals

[Irulan]

For mountain biking, which is the only place I've seen them, it's a horrible idea as which ever side you need is always flipped over on the wrong side. One spends way too much time futzing around with flipping them over to what you want... and those seconds can be important sometimes.

[jobob]

For mountain biking, which is the only place I've seen them, it's a horrible idea

The OP was asking in the context of road biking. I've seen two-sided pedals used a lot in road biking.

[Owlie]

I personally don't like them. Looking down at your pedals at intersections can cost you. However, if you're using them for riding in-town as well as for longer rides, I think that's where they come in handy. Because the clip mechanism is heavier, they usually flip platform side-up, so if you don't want to clip in for whatever reason, you don't have to worry about flipping them over. I'd put them on an errand bike that also gets used for longer fun rides, but not on my road bike.