While I was at it I tried on a leather VW wheel. Felt really nice actually, but sits a little too close to the stalks - also the indicator cancel mechanism isn't compatible. Surprisingly the horn worked too! Went for a little drive to test, got back and started to refit the Volvo one - and the VW wheel has snapped off one of the prongs on the contact set which sits under the wheel!
Anyone got a spare one of these knockig about please?