Are Preorder items Tradable in game?

I got a pre order in CompUSA so i am getting that death idol thing, but i would rather have the monk or warrior item, so would i be able to trade someone in game? or are they nodrop/soulbound?

No they are not

the term you are lookin for is "customized" and yes, they are.
if you have further inquiries, i suggest you refer to the appropriate sticky.