Agreed, when you mix that with the fact that the Angels legitimately want to move Glaus and moving him and replacing him with a lefty, more role playing guy is a good fit. They can have Jose back in the lineup and he can really do the little things. I'm not a huge Jose fan, but in the Angels lineup, he'd be a great addition and Konerko can play first and is much safer from the Angels perspective.
The Sox get a guy that can be a threat at the top of the order (erstad) and get dire help on the staff. Like I say, if the move Koch's 6 mill salary, then I'd look for them to add a quality reliever like Urbina (for say 3 mill...) and they would be right on budget.
Plus they get a good infield prospect. Defensively this team would be slick. Sick range and gloves in the infield and still a very solid offense, imo. They would need to add a new middle infielder though (role player).
I really would like this move.