Originally Posted by
mihlbach
Yes, once you have the cleats and pedals, all you need is the shoes. Any pair of "mountain" shoes is compatible with any pair of "mountain" pedals and cleats. Likewise, any pair of "road' shoes will work with any pair of "road" pedals and cleats. You just can't mix the two (usually).
Incorrect. Shimano SPD-R pedals need SPD-R shoes (at least according to Shimano). SPD pedals (which might be thought of a MTB pedals, but also are used for road riding) aren't compatible with Look style 3 hole shoes. Speedplay pedals only work with 3 hole shoes with an adapter, and 4 hole shoes designed for Speedplay's are only going to work with Speedplay pedals.
So there does need to be some thought when you're picking out a pedal/shoe system.