I always find photographers friendly, and willing to talk about their equipment. If you ask them what they are shooting or something stupid like that, yeah they probably aren't going to talk to you...but like I was at the US Open (rather nice seats) and before the Nadal match and the Federer Match, I was down there talking to the photographers. They were more then happy to talk and stuff, me there with my D3s 70-200 vrii and teleconverter, I guess they found it intriguing or whatever. Also same day, met two people with M9's who were more then happy to talk about theirs and we exchanged what our favorite lenses are and fun stuff like that. I generally find photographers to be out going...
Once, I was at a beach taking some pics with my new IQ180 and some women and her husband who were bird photographers stopped and were talking to me. Nothing wrong with talking to people when your not on a timeline....