I think I'm in the minority in finding reassurance in Butch's performance as a gameday coach at CMU and Cincy. He wasn't hesitant then, didn't play it safe, and--once he had his system fully in place, by the 2nd or 3rd year--was really making a difference in his command of the games.
Some folks in VN whose opinions I respect respond that he wasn't facing top tier opposing coaches. But he was facing--and beating--some pretty good ones. In his six years at CMU and Cincy, with roughly equal, or in some cases less, talent, he beat: Frank Solich, Mark D'Antonio, Charlie Strong, Tom O'Brien, Frank Beamer, Skip Holtz, Greg Schiano, Paul Pasqualoni, David Cutcliffe, and James Franklin. Some of them more than once. And just as Butch moved up from the Group of 5 into the Power 5, so did some of these guys. Some (like Beamer, Franklin, and Cutcliffe) Butch beat while they were already leading Power 5 teams.
Oh, and let's don't forget: he has beaten the Old Ball Coach. Twice. Once with less talent at his disposal.
Bottom line: Butch may not yet have impressed with his X&O genius at Tennessee, perhaps because he didn't feel confident in his Jimmys & Joes yet, perhaps for some other reason. But he has certainly proven in the past that, once he has his system in place and the right talent to execute it, he can be pretty bold and wily.
We're just waiting to see it unfold with the Vols. I think we start seeing it in spades this year. Go Vols!