This is a cool little tool.
It’s often a simple task to swap out remotes on RS Reverb systems without a full bleed. I’ve done it many times. If you’re careful, you really wont spoil the bleed. It works.
One thing that helps considerably is a fully bled remote going into the process. This isn’t simple if the remote is new and dry or if it’s drained out….unless you have a special little tool….
