To be honest, I absolutely hate it. Half the time I don't even understand what killed me, it's that laggy. With stable internet and a Netduma, mind you. (No it's not the settings).
Plus I hate extremes in FPS games. Too campy is a pain and too fast paced is even more of a pain. Here, you even have the hybrid scumbags: shotgun-campers. Supremacy is just a huge cluster f*** in terms of gameplay.
A lot of times I end up playing well but my god, do I hate that game mode!