Chaney and Cut are the two best OC's we've had, imo.
Chaney doesn't appear to be the type of personality that would thrive as a HC to me.
Also, interesting that while he was here he took a beating from some fans because UT didn't run the ball very well. However, if I'm not mistaken he's had run-heavy, successful offenses at both Arkansas a few years ago, and currently at UGA.