I'm using SPD pedals with Shimano M077 shoes. Yep, the MTB ones.
There is also an R077 shoe. The only difference between them is the design of the sole, the R077 is smoother. However, on my last Sportive I spotted at least 4 other riders using MTB shoes on their road bikes, it makes no difference at all.
There is also an R077 shoe. The only difference between them is the design of the sole, the R077 is smoother. However, on my last Sportive I spotted at least 4 other riders using MTB shoes on their road bikes, it makes no difference at all.