When I had my Piaggio scooter most bikers I met would lift a hand or nod. Most of the classic & vintage rallies in Aberdeenshire are all make events with cars bikes tractors & sometimes steam. There are a few single make club events like Morris Minor & Ford RS.
Perhaps its because population is relatively low so enthusiasts are more accepting of others choice as little chance of meeting same. Never met another M3W on the road in mine though I have seen Calum & car
