Pinto being only a color breed, there isn't a really standard look, or so I thought, I may be wrong. I have an arab that is 7/8's arab, but registered pinto because of his coloring. We've also owned a purebred, registered Tennessee walker that was a black and white pinto pattern. Your guy looks a lot like the son of that walker (a solid, also purebred and registered), but not quite as deep through the girth area. Could be walker/paint could also be just walker, and the guy thought paint cross because of coloring.