Who told you that people block with a longsword's edge? Yes that would ruin the blade, that's why you are only supposed to block with the flat.Housebroken Lunatic said:You do thrusts with a katana as well. I don't know where you've gotten the idea that katanas aren't used for thrusting.Arkzism said:actually that is a lie. the long sword can be a very graceful yet powerful weapon. two edges plus teh abiltiy to thrust, held be a guy wearing a custom built armour, and knights could do quite a bit in full plate. the long sword granted wasnt made purely for slashing it was very utilitarian and in the proper hands could work just as well as any katana
plus you can block with a long sword and not have to worry about anything. but why would you want to... you also have shield which in itself can be used as a weapon...
You can block with a katana as well, and YES you can block with it WITHOUT breaking the sword. It's just that you don't parry with the edge but rather the sides of the blade.
Also a longsword would have it's edge ruined if you used it to block with.
As for your other points, yes shields are useful defensive weapons. But if you hold a shield then you have to use the sword with one hand. This will reduce control of the weapon, as opposed to the katana wielder who is trained to use both hands, giving superior control.
Do note that if you will try to rebuke by lecturing me, do take note that I have a few years of actual training with these weapons. (I never was much into martial arts focussed on hand to hand combat so swords, polearms and chain weapons seemed a lot more interesting)
And with a shield, you wouldn't be using a sword that is designed for two hands like the katana, they would be using a slightly shorter sword, unless they were just really strong. But a knight wearing armor and using a shield wouldn't be as worried about having superior control, as they would only use the sword for attack, and wouldn't need to control it as well, as blocking is where control plays the greatest part when fighting with a slashing weapon.