BEVERLY HILLS, Calif. — Michael Vick appears in the lobby dressed in all-black sweats, a look that helps one of the NFL’s most famous — and at one point, most infamous — retirees find a seat in the middle of the hotel’s restaurant without notice. He’s lean and fit; the gray hairs on his chin are all that keep you from assuming Vick could still make a pair of defenders comically take out each other in an attempt to tackle him.