Originally Posted by
terrymorse
One advantage of SPD-SL (or Look KeO) — most road shoes won't take an SPD cleat.
If you want to use SPD with a road shoe, you're limited to entry level models or a "touring" road shoe. They tend to be heavy and don't have a stiff sole.
Just use mountain bike shoes.
Many manufacturers make MTB shoes identical to their road shoes. As an example, Sidi Dominator MTB shoes are virtually identical to Sidi Genius road shoes.
Dominator MTB
Genius road...
Same last, soles, buckles, straps and insoles. Fit is identical.
-Tim-