I don't really understand what you are arguing about. I was under the impression that Travis was a RB, however he's been utilised in CM for most of his first team appearences. Surely you could class him as a player comfortable playing RB and CM.
There's a similar conundrum with Bennett, who is a midfielder that can play on the wing, CM, number 10 and RB. He's just a flexible player positionally, which is great for us. I don't see anyone whinging and moaning that he's a defender all of a sudden due to him playing quite a few games at RB this season.
Ultimately why does it even matter..