Funny you should mention that.
Supposedly him and J.C. Watts are friends.
Wouldn't matter though, the democratic party would race bait, not matter who was on the ticket or what the circumstances are. Remember black republicans, aren't considered black (remember what happened in steele's campaign).
It would matter (a great deal!) even though you are correct to say they would do it anyway. Doing it doesn't mean you will be effective at it. A black man on the ticket will kill their slanderous charges in any fair thinking voter's mind.