I actually disagree with this. Dan Butler's appeared in Boston a couple times and looked like a competent third catcher. He's no Jason Varitek, but he's a large cut above the Corky Miller/Kevin Cash/Ken Huckaby types that you see getting forced into the lineup when starting catchers get hurt. If we had a big injury to Vazquez or Leon, I'd be pretty comfortable with Butler being the backup catcher for several weeks. He's competent on both sides of the ball, and a great organizational guy.
The fact is that Swihart is unnecessary. Since we have an established tandem, and for that matter, a pretty decent replacement guy in AAA, and none of those guys are Swihart, I think he's gone by the deadline. We simply can't give him the playing time he needs, and afford all the mistakes he'd make, to develop him. Let some basement dweller team turn him into the star he'll never be here, and we'll take a relief pitcher or B-prospect in exchange. It's the corner we've painted ourselves into with the guy.