I'm currently doing a playthrough utilizing the Shadow Wolves and I'd say they perform great in the field but are generally mediocre in sieges due to the polearm length. (Haven't tested w/new polearm overhead stab though, don't think it works w/their polearm anyway cause overhead swing). As far as field battles go, when I'm facing an army with a large cavalry force, be it Sarleon, D'shar, Jatu, etc, I place a few trash tier troops like recruits or companions in the front line, I go in with a bow and snipe a low tier shieldless troop, which generally causes the enemy AI to charge. The cavalry get caught up on the trash tier line and get stuck in a big clump, making them very vulnerable to archers and halberdiers. At this point I bring the wolves around the back and send the general infantry to surround the front and the enemy cavalry is completely demolished.