Single player Testlive
Equipping a fighter thrall with a 2h sword, and lance, pick, torch.
Fighter will try to fight with a lance and not be able to do anything.
Fighter will fight with a pick and a torch and not do well dps wise.
It’s fair to argue that’s what you get for putting those items in their inventory.
However, I tried an archer thrall.
Equipped an Archer with a 1h sword, bow, and obsidian arrows.
Archer was choosing fists as a option when in a melee fight and comboing with fists rather than using 1h sword. Archer would swap between using 1h sword and fists in combat.