Flat camber is boring to me even on steeper runs. However, flat camber has a big plus in my book. When doing things like clearing gaps, the landing feels superbly stable. This is why I like other K2 boards with a mix of a long flat zone in the middle and rocker in the tips. It's the best of both worlds for me. I get the playfulness of rockers during my presses and the stable landings.
Harshmellow + flat camber in the middle = orgasm for my feet/knees on landings.
I just dislike 100% flat camber because I don't get any playfulness. If I want to mach down runs, I'm hopping on my stiff posi camber.