Exactly - just because he's name on the bench doesn't necessarily mean he'll start on the bench. ;-)
I think he will (start on the bench).
He's not natural as a halfback - always has an eye for the run, but can certainly create for his teammates at times. Not a natural organiser, and not a natural "pass first" kind of guy.
Very well suited at 5/8 and, as we saw against the Dragons, can create trouble there. Yes, he did also create some trouble against the tiring forwards at first receiver, but I thought our attack looked a tad disjointed with him there.
I think we'll see Mateo play the first 20 mintues at 5/8, then shift to lock for the rest of the game. K Keating will come on as 5/8 for the rest of the game.