Warrior Archer
Bow expertise, split Arrows, poioned weapon--from the survivor tree. Repair is helpful--1 point only.
Mage
hell spikes
Lockpicks--for more loot and to complete certain quests, but not essential.
Alchemy--handy, but you can do without it.
pickpocket--don't need
Particularly later on in the game you might find yourself with an excess of available skill points.
