I twinked my shaman out with a +30 spell damage staff that I applied rockbiter and flametongue to at various points. When I upgraded weapons (the 2.0 DPS was slowing me down compared to the +30 damage

) I just shipped the staff off to my level 2 priest who is currently holding it.
So, there's proof that if an item soulbinds from a shaman's weapon enchant buff it isn't permanent. At least it wasn't for me.
