Yeah, i've been there. Nades really kill the mood. But if everyone starts using knives like crazy, just use the saw non-stop until you convert them all. Try this line "You have no honor! You swine are not worthy to lick the scum off my boots! FOR HONOR AND GLORY!" and then rush at them saw first. Sometimes I'll be in a CTF server and I'll manage to get everyone to only use saws just by saying that. And people will really start to fight for their honor if you manage to shank them with the knife while they're using the saw. Ah good times..