The "plan" was always to use both backs. It just doesn't work out that way in reality.When the bears start the game and probably through the first quarter or so, they will use Jones - he's the starter.When they are losing, they will use Jones, because he has more big-play ability and he's a much better receiver.That leaves us with mid-late game when the game is close and mid-late game when the Bears are winning by a lot.In the former instance, they MIGHT use Thomas a little bit to give Jones a breather. In the latter instance, they might use Thomas a fair amount. But how often do you think the latter instance will pop up? Not very often. And those instances aren't generally all that great for fantasy stats. A nice yardage bonus, but few catches and not very many TDs.As a Jones owner in every single league I am in, I am much more concerned about his health than his "sharing" with Thomas.