I don’t need a beep test

I was nearly crushed by a lorry while riding to work on my Moto Guzzi Griso. Inches-from-death sort of thing. If I grab for a horn to warn an idiot lorry driver that he’s about to kill me changing lanes I don’t want to cancel my indicators. And vice-bloodyversa too. If one designer from one manufacturer can give me one good reason why these switches shouldn’t be standardised, then fine, I’m all ears. But otherwise, perhaps refrain from impromptu memory tests when we’re trying to avoid being mulched.