As far as the switch being capable, yes.
But as to physically doing it, I suggest you take the cover plate off one of your household switches. Look at the size of the box it is contained in. I dont think you will find that much space available in your motorhome at all those switch locations.
There are many different types of electrical switches available in many different appearances. Try searching Amazon for some different types that are compact and made for mobile uses, aircraft and marine units immediately come to mind for applications to explore.
