At least we get the chance during video shoots to watch other photgrapher's techniques. I have drawn from their techniques to and incorporate them into my own. It is really a great vantage point....
I always feel that I never have the time to watch the photographer's
technique; I'm always either grabbing some quick shots of their
photo session (with my attention focused on the shots as to what
would look good on video) or I'm busy setting up or breaking down
equipment while they're doing their shoots. Can't say that I've ever
stood and watched a photographer work because there's always
something more pressing to do for the video side. Maybe sometime
if I'm just a guest at a wedding.