I bought a used bike last week with Shimano DX pedals. That's fine as I like clipless and they're really nice pedals. The problem is my other bikes have Crank Brothers pedals. I have an older pair of Specialized shoes I can put the SPD cleats on, but reading other threads here, it seems like most guys ride a more downhill specific SPD type shoe. Am I risking a twisted ankle riding the Spec shoes?