To those of you who are big fans of a guard for catching the other person's blade this assumes that you will be in a "knife duel" where both opponents have equal initiative versus a "knife fight". Most knife fights outside of the combat zone are ambushes prison style. If you think the film "The Hunted" accurately depicts knife fighting you are wrong.
Yeah I read or heard somewhere that 99.9% of "Knife Fights" are assassinations.
In the sense of an attack on someone unarmed and unaware.
But on the other hand, why not have it just incase? I wasn't basing my suggestions on "The Hunted" more along the lines of Bowie Knifes and Jim Bowie. But, I agree with what you are saying. But there also are occasions, Drunken Brawl Outside a Bar where someone comes slashing at you where having a reinforced guard wouldn't be a bad thing. Unlikely as it is.