Maybe I'm wrong, but if there is an appeal (and I believe there will be) I just don't see SCOTUS even hearing the appeal. They'll probably just say something like "read Heller and MacDonald." The case is certainly different than MacDonald specifically, but it's very much along the same lines. It would be difficult to justify that MacDonald was only about having a gun in your home for protection since it's obvious (and even the CA7 made reference to this) that you need protection outside your home as well.
Maybe I'm wrong, but I just don't see SCOTUS taking the appeal.