They are compatible by the way. I have those shoes. They arent bad. They have got some flex in now though, but that could be how i ride.
They are MTB pedal compatible because they also have the bolt holes for the 2 bolt cleats that MTB pedals use. They also have the 3 seperate holes for race pedal cleats.
Oh, you might find the Shimano cleat screws arent long enough. You do have to use the metal square or you will loose the screws and the cleats will come loose. I had to use the bolts from my Look Keos to get the cleats to hold right.