Thanks a lot guys! Really appreciate it!
McNUTTY: It's all preference really. His defense and special defense could be switched and I don't think he would be any less effective. With plenty of physical defense, he's able to shrug off an Explosion from standard Registeel and absorb hits from physical threats like Rhyperior, which is nice. His main job isn't really to wall the special attackers in UU. Once he gets rid of an opposing team's fire pokemon and fat walls, and knocks off as many items and paralyzes as many pokemon as he's able to to give my sweepers an easier time at their Blizzard spamming, his job is complete.
This team puts the offensive pressure on from the get go so oftentimes I find myself pressing Blizzard instead of being on the defense lol.