Garbutt might not get long minutes, but I'm guessing he'll get more than the token 10-15 at the end of the game that the likes of Yates/Walters/Robbie Ward usually get.
He'll need to as well. If it's going to be in the mid-70s at kick-off time, there's no chance of getting long minutes out of the likes of Leuluai and Delaney who are going to be gassed after ten minutes. The coach might even consider it necessary to substitute Peacock in a big game, although only with JP's agreement obviously.