Is it possible to be a Pig/Necromancer without a necklace? Im not that familar with the Necromancy gems other than you get some item in the crypts.

I have a pig potion (and a deer potion) - what would be the best way to go about being a pig or deer necromancer? Im assuming pig would make a better necro as its a support skill.

Also, bard isnt on here, but its basically like sword in that it equips to main hand, how does animal and main hand work? Can you end up as a deer bard?