Volkswagen doesn't swap signal/wiper levers?
My wife and I have my Passat and her Mazda2. Occasionally we'll flick the wrong lever, usually the first time only in whichever car we're driving.
I used to have a Euro Barina and a VZ panel van, again swapping between the two of them without any hassles, as well as other various family members' cars which swapped sides throughout.
And just to add to the mix, I was also in the fire brigade so fairly regularly went from whichever of my cars to any one of three or four fire trucks, with different gear shift patterns, wiper/indicator levers, not to mention siren/light controls and just shifting from a car to a 12-15 tonne truck....