Spoilers Yellow - Thank you for that contribution. I was beginning to think that our company was "odd-one-out" for actually expecting a handling FO to initiate the abort themselves.
I understand the feeling behind 18-wheeler's comments, and clearly if we've called STOP and the handling FO isn't keeping up with the rapidly ensuing series of events, I always have the ability to take over - but that is true at any stage, in any flight, not just in a rejected takeoff. Our SOP remains that if the FO is handling the aircraft, and I call STOP, the FO closes the throttles and stands on the brakes, and does NOT immediately pass control to me.