I believe that would be a great combination. Gruden is a man who sleeps 4 hours a night, and is all about hard work. He surely would jump on this if Dungy is his GM. Also, both of them think highly of Tebow.
I cannot se a better tandem than these two guys. What they bring to the table, nobody else comes close. Don´t know what it would cost, don´t care what it would cost. Just go get them!