Actually imo it takes alot of skill to use gshade as well. It isn't as simple as putting on a filter and that is that. You have to find the right filter for the location, time of day, feeling, angle and still work with ingame gpose to light up specific areas. I have done both, and I can tell you that I sit as long with only gpose as I do with a shader.
this is with only gpose and I think it looks quite alright.
also only gpose
Shaders are just another tool to have fun with. And lets not pretend like photographers dont edit their pics after anyway. Let people have some fun.