P1na: The thing is, witchers using 2 swords is a stablished lore elements from the books, like all the female sorcerers being supermodels. You can't change that without pissing on the lore, so they adapted it the way they saw best. Which doesn't mean they couldn't do it better, but they must have Geralt using both weapons.
wolfsite: True, I never read the books or got invested in the lore so from my perspective this just felt redundant or unneeded. Maybe if they had the skill tree done differently so a sword ability could be bought once and used with both swords then a different combat tree for other types of weapons such as knives, axes, and other weapons in the game that would have been more flexible, at the very least make other weapons feel useful.
really, its the lore. In witchers world witchers use two different kind of "witcher swords". why? because thats their world works. It like taking away the light saber from jedi.
Why did japanese samurai carry katana and wakizashi, even though one could argue there were more powerful weapons suited to warfare (like naginata)? ...because that was the way they did things back then.
I understand the need to "make sense" of things - but in my opinion its not really way that adds to enjoyment of any game: Certain things work in certain ways and instead of getting stuck on them its just better to accept them and move on.
Anyways, even real world isnt ruled by reason, so why expect that from games? :D