Tex will be back soon, and Swisher will not be starting first base anymore. (It isn't even a debate between Tex and Swish at first base; Tex has one of the best gloves there in the majors.)
I have no problem with Swisher filling in occasionaly for an injured Teixiera, or maybe eventually a corner outfield spot, but I don't want him jumping around from position to position all season. The players on a championship team's defense need to be familiar with how and where everyone plays in the field. If not, there will be poor team chemistry, thus leading to a poor defensive club. (Today's error from Swisher certainly doesn't hurt this argument.)
Swisher has had a great week, and he deserves a reward. I say, with Matsui's recent struggles at the plate, Swisher should assume full-time DH duties at least until he cools off. I'm coming down hard on Matsui here because of his subpar last season. Matsui needs to reacquire his consistent ways of old if he wants to be a main contributor for the Yankees in '09.