The shimano R076 shoes ARE compatible with SPD cleats and pedals as they have both the shimano 3 (spd-sl) and 2 (spd) bolts. So they also leave you the option of switching to spd-sl in the future if you wish. But using those shoes with the SPD cleats isn't optimal as every time you walk you will be crunching the metal cleats direction on the ground, whereas the spd-sl cleats have that little plastic bit you walk on instead.