I never had been asked "is that a Hasselblad, but I mostly shoot with a Canon SLR.

However, I have been asked many many times if I am with the local paper.

Actually the most flattering thing is that I was at a overlook with my camera, and a young nice couple asked me to take a photo with their film SLR since "I knew what I was doing." I also gave them my work card. Got a email 2 weeks later saying that the photo i took is framed in their house. That was one of the nicer things.