Hmm, don't know how much help this will be, but his feet appear to be really similar to my Mustang's. A very long hoof capsule all the way around and somewhat mule footed (almost like a club foot, but not really) on the hinds. Very deep collateral grooves and a fairly prominent frog makes it seem almost like he's got a super thick sole so that his entire hoof looks long even if the wall is trimmed down and rolled the way it should be.
Hopefully one of the hoof expert folks will chime in as I have always been a bit curious about that as well.
Oh, and did I mention that you have one hell of a stunning boy there?