Yeah I don't think anyone expects him to keep up anywhere near this pace. He did have a high OBP throughout the minors and even walked quite a bit last year when he couldn't buy a hit during his call up. I think eventually 3rd might be a good spot for him.
Yeah, I can understand batting Cowser at the bottom of the lineup at the beginning of the year, but I think he's proved he can hit MLB pitching. I would bat him no lower than 5th.