Everytime my DK equips a sword the shield dims, even if I have points in Melee with Shield.

How do I know if a weapon is one or two handed if the description doesn't say? I have points in one handed melee slashing. But I don't know if I'm using a one handed Claymore.

BTW, which is better to learn, one handed or two?

Shields dim with bows too, but I expect that. A bow takes two hands.