Curious. Outside the theatre (where they have high-tension lighting) and bathrooms (where lights are pullcord-controlled by regulatory fiat), I've never seen any light switches other than the rocker-style ones. They never ever have labels, or any indication as to which light they control, unless someone has stuck a sticker on them indicating which is which (and sometimes, especially for inside switches controlling outside lights, the light they control is not even visible: once I even saw a switch controlling a light mounted on the side of a different house!)
I suspect the nature of light switches is one of those things heavily controlled by historical contingency and national regulation. You cannot say 'normal' about things like light switches: different regions have different normals.