I've only just began playing in between Dragon Age sessions. (Divinity 2 has such a pleasant 'looser' atmosphere) The INT for Warrior is so... odd Oo; I was actually wondering what the best way was to distribute attributepoints for a warrior archetype.
Well the int is actually for mp regen purpose, since there no skill to fasten the regen beside recovering using potion, and for magical defense as well. Unless you choose to use weapons that are focus more on magical damage over melee damage, then int will be more useful in that case for warrior, since weapon in the game comes with melee and magical damage.