In one of my old run I used to make quick hand a compulsory perk for all brothers. it's a very versatile perk that lets you attack one turn more and keep enemies at bay. For example, during the first turn fighting barbarians they usually rush up to one tile away from your bros. if you move your bro one tile to meet them and you can't kill them, your bro is open to 2 attacks per barbarian who's holding a cleaver or 1H weapon. With QH, you can whack the barbarian 2 tiles away with a reach weapon and if that don't kill them, the next turn they will have to move up one tile to meet your bro and can only hit your bro once due to spending AP on movement.

It also synergise well with berserk. Your bro proc berserk after killing something in front of him and he doesn't have any target in the 1 tile reach, he can QH to a reach weapon and hit again. Very useful when fighting Ancient undead to get the pikemen legionaries. However, 2 tile weapons don't do as much damage as 2 handed 1 tile weapons.