Can Bitcoin Cash effectively be utilized as a second layer scaling solution for Bitcoin Core? It’s quite simple actually. If many merchants accept Bitcoin Cash, then you can open up a Bitcoin Cash channel (wallet) for/in which you have already exchanged your Bitcoin Core to Bitcoin Cash. If you want to settle the layers and close the scaling channels, then you can close the second layer Bitcoin Cash channel by exchanging your Bitcoin Cash for Bitcoin Core, as long as you don’t mind the fees. If you cannot tell. See? Simple and elegant. I am half joking with this. Which is deployed more already Lightning channels or Bitcoin Cash channels? I’m using some metaphors here, if you cannot tell.
