No, what I know about his skills from scouting reports, firsthand accounts I've read, an analysis of his minor league numbers, and lurking at Soxprospects.com, all leads me to believe he's fairly underrated and the big question isn't the D but more will his bat click.
Defensively I've heard a lot of praise of his range and his ability to make the big play, with the questionmarks hovering over consistency, not ability, which is true of a lot of guys who get to the top level at a young age. Offense is simiar -- tools are good, approach needs work. Another year or two in the minors wouldn't hurt him and would probably do him some good, but if he was needed as a fill-in next year I think he'd be serviceable. Just keep your expectations modest, this guy isn't Hanley.
Of course this is all on the theory that we don't want to just hand the job to Lowrie and go get a Nick Green type if Scoot goes down. Me, I'd be fine with that. Lowrie isn't Tim Naehring, his wrist seems positively fine and there's no other outstanding injury concerns with the guy, you might as well see what he is.