Spirited A/M-road drives usually end with a thumbs up or flash of the lights goodbyes as you get off, doesnt matter what kinds of VAG car it is.
Only the last week I had a Mk4 V5 and new Polo GTI (very nice front lights btw, I am quite jel) in two separate occasions give me the thumbs up or flash.
That said, mk7 owners seem to be less inclined to have any kind of camaraderie, but I suppose its too new to be solely in the hands of people who like cars and have a sense of humour etc.