I was tired of creating Channels display for posting breakdown of my maps. So i made a very simple (and limited) tool for Substance designer that generates the map for me. So i can just save the map. You can control (sort of) the way the slices are made with a gradient input. That gradiente will be internally sliced in 6 histogram ranges and filter the input channels from a base material.
In the future i would like to improve it to auto-split the outputs based in the number of inputs if possible.
I hope it's useful for you too.