Weapon swap would make sense if both were not linked to skills.
In EE, You have skills for weapon, so there's not much sense to change your weapon, if you have for example +5 in double wielding, there's no point to put sword & shield...
I never swapped my weapons in 200+ hours gameplay.
Although alternate combinations could be good if the skill system is the same, annoying to have to change my stuff while crafting/selling.
Its ofthen better for a warrior to get some shots off with a ranged weapon than do nothing for a turn because the battlefield is spammed full with cursed fire.
The alternative is using granades and such but those come in limited supply.