Rolling an F-4 with high AOA was purely rudder-based. Using aileron would result in a departure--big time.
Which model of the F-4 did you fly?
I flew the "E" for two tours, one of which was an air to air squadron in the ROK. I'll agree with you about rolling with ailerons in a hard wing F-4. Use any aileron in high AOPA maneuvering and it was off on Mr. Toad's wild ride. I flew hard wings in the school house. They harped on not using ailerons during hard maneuvering. It was a tough habit to break. During early sorties in BFM, etc, the autopilot wouldn't allow the stick to move laterally.
After transitioning to the E model it was different. The leading edge slats would allow for some judicious use of aileron to wrap it around in a fight.
After the air to air squadron tour, it was off to a multi role mud beater unit. On one of my instrument checks whilst doing the obligatory confidence maneuvers, the SEFE requested a high AOA rudder roll. Coming from the air to air unit, I was well aware that such a maneuver was a HUGE energy burner and waste of potential energy. So, I did a bit of a lazy one in order to preserve energy. The SEFE didn't like mine, said here let me show you how it's done. We transferred control of the jet. He obtained a bunch of airspeed, pitched up aggressively, and stomped a boot of rudder to it. We promptly went completely out of control, rolling and tumbling as he expertly applied the out of control bold face procedure to recover the jet back to controlled flight. He passed control of the jet back to me and we proceeded to successfully complete my instrument check.
In fourteen months of very aggressive air to air sorties in the previous flying assignment, I never put the jet completely out of control or heard of anyone else doing it. We routinely maneuvered the jet in the phone booth to air speeds that didn't register on the airspeed indicator. Energy management is all important in air to air maneuvering. Going on Mr Toads Wild Ride, not so much.
It just goes to demonstrate a common saying in the real world of fighters, hamburger is still hamburger, no matter what you wrap it in.