Comps at Soxprospects.com for Lowrie are Carlos Guillen and Bill Mueller. I'll take that, and then some.
I don't think he's quite Jeterish, at least not with the bat, but he's shown a nice little ability to make situational contact and he's been very valuable for us.
In the minors, he showed a .280-15-70 ish ceiling offensively (or .280/.350/.450 for the OBP-worshippers)
If you can get a shortstop who can do that, and get by defensively, you definitely take it.