Two-weapon fighting styles evolved because people didn't have shields (civilians), or don't like carrying shields (they are cumbersome), or wanted to be flashy. That's pretty much it. A shield is better both for offensive and defensive purposes than an offhand weapon.
However, DOS has talking sheep, gods getting into fistfights, and a spell called "deathpunch". I think it's fair to say that DOS is not realistic, or low fantasy.
I'd appreciate some dual weilding mechanics.
And some 'unarmed fighting' mechanics too, for that matter. I want to make Punchy McFisto.
