Who was your mcsd instructor? That's not how it's being taught there now.
I actually learned it when I attended an IPD firearms qualification course in 1996 (along with a couple other "non-police-academy" folks). That was the way it was being taught, as I recall. When I went through the Special Deputy program in 1998, I don't believe our "instructor" expressed a preference; I simply kept on with what I had learned. For a couple years after I became a part-time Special Deputy, IPD/MCSD were still sharing ECPR and conducting joint training. By the time they split up again, my preferences were pretty well cemented in place.