The only place the code requires the 1.25" setback is next to framing members. I don't like it, or even agree but that is the way it reads and the way it gets enforced here. A agree with your concern on service entrance conductors. I would probably go after that with 250.30(A)(1) <service disconnect shall be>... "nearest the point of entrance of the service conductors." and tell them the "up" has to happen outside the building with the penetration right behind the service disconnect.