[Nightshade]

Originally Posted by Kloster

Not counting the shield (which is of course the main parrying weapon, widely used from the bronze age to the renaissance):

And you'll note I've granted that one.

- The florentine style is a rapier plus a parrying weapon (mainly a dagger). Widely used in renaissance Italy, dominant in european duels from 1500 up to around 1650, when the better cups and the introduction of quillons allowed for 1H parry with purely thrusting weapons (Giacomo de Grassi and Vigiani).

Widely use and dominant are not the same thing.

- Niten’ichi (or Ni-To Kenjutsu) is a sword plus a parrying weapon. Usually, katana plus wakisashi. Never was dominant, but has been quite used.

Again, I've never questioned it occured; I'm questioning your statement that it was the default case.

- Philipinos Eskrima, done with 2 sticks or 2 swords. Dominant in the Philipines.

Not all escrima/kali schools even teach two stick technique, however, which doesn't suggest to me its a default either.

The single weapon for attacking and parry is feasible almost only with the modern, light thrusting only weapons.

Again, the examples of asian sword technique I've seen tell me quite the opposite. I wouldn't want to say how practical it is for weapons that do all (mace) or most (axe) of their damage with mass, because I simply don't know, but there slashing weapons where parrying is the default way to use them defensively by all evidence I have.

Parrying with a cutting weapon risk to damage your own weapon.
Parrying with a heavy weapon is slow.

It still keeps you alive, and dodging is not quick either, especially in armor.