It's well known (to everyone bar the selectors) that you can't have Siddle and Johnson in the same team, the 2009 Ashes proved that. At this stage though, I'd much rather go in with Harris, Siddle and Copeland. If during the home summer, the new selectors decide to give someone like Pattinson or Cutting a spot at Siddle's expense, so be it. As long as Johnson is no where near the starting XI.