I have no problem with him being called up for this fitness test thing. Wouldn't be surprised if Gatland has done it mainly to see how the rest of the squad reacts to him. The likes of Roberts have openly critisized him recently, and if Henson does proove some form in time for the 6 nations, then it's better that some ill feelign is settled now rather than later. Saying that, Roberts is extremely professional, and I'd expect him to accept whatever Gatland decides.