If you mainly use the switches to quickly check their position then I can absolutely understand why English labels would be easier. Personally, I only map stick functions (e.g. weapon release, trimmer, wheel/parking brake) to my stick aside from the flare dispenser red button in the Mi-8 (because there is no pilot-navigator to do it for me) so for everything else I flick switches. This way I learn them fast and have to remember where they are.