I think that's entirely what his use is at the moment. That being said, I think we lose a bit of shape when he's in the team and I've not seen him offer any defensive side to his game. If anything I'd probably use him as the man to bring on for Gelhardt late in a game.
But hes shown a goalscoring side to his game on more than a few occasions now so with our lack of strikers my vote is to get him on the pitch more often