Using one sword for two weapon combos?
You can use a single weapon for both weapon swaps if you have it in the same hand. For example, you could use Sword / Pistol and Sword / Torch with a single sword, just by equipping the sword in one set and leaving your main hand slot empty in the other.
If you’re putting the weapon in the other hand, though, there’s no way to use one weapon. You’ll need two in those cases.
Ahh I see, that’s a shame. Thanks for the answer!