The discussion of that method seems to rely on some features of Keyclone that may not exist in Clonedkeys
To give a short explanation what you need, for the ftl-setup to work:
1. Keymapping (a concept that let you press a key on one client and that broadcasts another key press to another client) in general. (This feature for example is not keyclone exclusive, octopus f.e. also has keymapping)
2. The ability to specify different keymaps for each client(aka each running wow) ! (this afaik only keyclone supports at the moment (to my knowledge))