Well, I'm for using as much reverse as I can control after touchdown when the brakes are in a
high-energy zone. Use of lots after touchdown, when there is normally plenty of rudder control and it is most effective, will save the brakes a bit for later in the roll. There are no directional control problems at high speed, and if the crosswind is howling or the ice is thick, a) perhaps you should not be there and b) use less.
'Until a safe stop is assured' are good words. Surely no-one is suggesting that you keep max reverse on as you slide off the runway
