For the same reasons you want a shoe, to walk etc, I did as well with my touring and commuting bikes, so I simply went with a mtb shoe and kept the cleat holes in the shoe covered with the plug. Any shoe like what is shown on this web site will work fine: 17 Stylish Pairs of SPD Cycling / Bicycle Touring Shoes

Since the MTB shoe does not have the plastic cleat on the bottom of the shoe that was found on road bike shoes back in the day, that allowed the pedal edge to fall into the slot on the cleat, they do have lugs and sometimes the pedal edge will find a lug to drop into, but I don't worry about whether or not my pedal will find a lug opening because the rubber bottoms grip the pedal well enough for touring and commuting.