Sorry Spidey, but I strongly disagree with that. I know Kinnister teaches that, but we differ there. He has a lot of great stuff out there, but this shot isn't one of them. The replacement shot is not going to come up much in an actual game. The stop shot comes up every single shot. The stop shot or stun shot determines what you need to do for position on the next ball. It's your starting point.
If you don't learn to stop the cb at all distances and speeds, you won't learn how to control the cb for any position shot accurately. Your subconscious picks up on what you practice, and duplicates it in a game. You don't want to train you mind to replace the ob because it just isn't practical over the long run. Once you know what to do for a stop shot, if position requires moving the cb forward a couple of inches, you automatically know that you just hit the cb a hair higher than for a stop shot. Or a hair lower if you want it to draw just a few inches.