I love the idea of the versatility of these pedals, but the reality is they are annoying to use. I ride mainly with cleats, and these pedals are weighted so they are always clip-side down. Flipping them over is not easily done, usually involving taking my eyes off the road. The clip themselves are a little clunky, sometimes taking repeated tries to get the cleat to click in. Going back to my Shimano double-sided was a relief, even if it means an extra pair of shoes.
Pros: Rugged, good if you mainly use regular shoes
Cons: Complicated, difficult to use with spd's