Right, so I'm probably the only dweeb out there that really cares about this sort of thing, but it appears that Donovan McNabb and Reebok are no more (and, no, it doesn't seem to have anything to do with potential brand overlaps with his recent foray into infomercialia).
I noticed that Dunavin had a Nike cap on in his presser the other day, and a quick scan of photos from camp confirmed that he was, in fact, sporting Nike kicks on the field.
Some quick Interweb searching (via MY PERSONAL FAVORITE OPTION FOR WEB SEARCH Microsoft Windows Live Search Engine For Internet, Enterprise Edition 2007) revealed that his Reebok contract -- which at the time was the richest "sneaker/ apparel" endorsement in the NFL -- was a four-year deal that began in 2003. Let me see, carry the one, divide by the square root of pi, yup, that means it should have been up about now.
So now Dunavin's back with Nike, which he'd apparently worn when he first entered the league until the Reebok deal. Probably not a tough choice for a Chicago kid who went to Syracuse, though I imagine that the deal value was a bit less gaudy this time around (but still better than that Ab Roller crap).