Does Cleveland count as he was "90% administrative and 10% football"? As an aside, this is why Edgar Bennett lost the OC job. McCarthy may call the plays, but he doesn't instill the offense and get it prepared (my read based on snippets of information here and there).
Not as much as when he was DC. But it was his defense he installed, so you can't ignore it.
Bud Adams told me the franchise he admired the most was the Kansas City Chiefs. Then he asked for more hookers and blow.