It's good to have something that quickly shift clocks in different order.
The most useable ON/Off switch for my setup is Counting ,if you are experimental, the result will be unpredictable in a good way.
The only downside is.
If you own TipTop Audio mantis case,
you could not install your 4ms Rotating Clock Divider, because the expander ribbon cable at the back is hitting/blocking your way to mount it in. And you cannot install it. So After the purchase of 4ms R.C.D Breakout module. I have to move both modules in another case that fits in.