I believe Garrett will try to keep Barber fresh for the late going. If Barber is the nominal starter, I think he is likely to be rested quite a bit on the sidelines while Choice does the heavy lifting and Jones provides the excitement.
But there might be times when Barber and Choice are on the field at the same time, letting Jones sit.
Then, in the fourth quarter when the game is on the line, Barber will be used as he was last year to punish the flagging defense and push over scores.
I think all three backs may be used extensively in a co-ordinated fashion, all counted on to do their co-ordinated part. Instead of a two back scheme, it may be a three back scheme, keeping them fresh throughout the game.
A different definition of triplets.