Your welcome.
Glad it's functional.
In my DAW i can select a controller for each of 16 midi channels in my DAWs instrument window/ wrapper.
Also i get the option to select the midi channel input from a controller, when i select that specified controller for my track. I don't get this option, if i have it set to ALL inputs.
If you have'nt tried to select the specified SL MKII controller instead of a ALL input setting, then i suggest you try it.
But i can see the Cubase Input Transformer have a function, if it actually make it possible to make things like this work for multiple controllers at the same time. I think, it can make the same things, as i can in my DAW, and perhaps even more, as i understand, it can work in both local and global mode for the commands. But yes, for simple things there could be another way to make this work, - and perhaps there is.