I think that K style killed Gunz 1 for the normal player.
K style was a glitch to begin with, so was wall slash-jumping, but I didn't see wall-slash jumping causing new players to completely give up due to the STUPID learning curve of K style.
Besides, K style was detrimental to keyboards, it taught people to "**** aiming, use shotties" and to use K style in EVERY situation, even when K style was the worst possible idea (IE, Quest mode. Shotguns + Katana + quest mode = K styler dying 5 minutes in.) ;/
TL;dr?
I'm glad K style is gone. It was a POS Bug that was abused, And never fixed. I'm GLAD to be rid of it, and I'm going to enjoy people crying that it's not there.