to each his own.
i didn't like his 14 homers in 77 innings last year. and in the minors he may be able to hit his spots, but i saw him nibble and nibble last year.
also obviously our front office isn't that high on him, if he's not in the bigs. and again he wasn't great in spring. you can say AAAA player?
Hence the "when he keeps it down" caveat.
When he leaves it up, it's very hittable, unfortunately. I'm not enthused about him either, but he's done nicely in the high minors over the past couple years, so it's worth a try.
Like someone else said, it comes down to this: is he really worse than Olsen/Marquis?