Spears are also great for Finesse classes with warfare skills, simply because of their excellent range, they deal slightly less damage than other Strength 2-handers but their range in melee has no equal, combined with opportunist it just rocks.
Spears are awful, lol.
They scale with finesse, but none of the scoundrel abilities are really meant for them.
They don't scale with warfare, because warfare scales with strength.
It's like, what's the point? Not to mention, there really isn't a lot of unique spears in the game. Daggers are infinitely better and just have better supportive options.
Some of the strongest combos in the game are with daggers. The most consistent form of CC in this game is from Warfare's ability to rupture enemy armour instantly and keep them knocked down for a long time.