Friedrich Ironhide wrote...
Was that a pen and paper rule that never made it into the game?
Yup. That's pretty much it. In NWN, each weapon type is wielded in one hand or two, depending on the weapon. There isn't a way to switch a weapon's type of wielding in-game.
You could wield a bastard sword two handed if you played a gnome or halfling, but that would mean two-handed use at all times (just like all medium weapons in the hands of the smaller PCs). Otherwise, for medium-sized PC races it's a medium weapon and that means 1-handed wielding.