Originally Posted by M_S
I've heard of people buying eggbeaters so they can use the same set of shoes cleats for mountain/road/whatever.
This isn't a bad idea though. It could help me justify the cost of an expensive set of pedals. But until then, it's el-cheapo wellgo SPD for me

That's what I do on mine. I have some eggbeaters on my MTB, Quatros on another bike and Candies on my commuter. One pair of shoes fits them all. My other bikes have other types of pedals, but the main bikes have Crank Bros.