Hard to explain what I mean in the short length of a subject line, but I got to thinking about this the other day while playing with enchanting - the player is limited to only putting certain enchantments on certain body/weapon slots. I never thought to check before, but do any of the unique enchanted items (daedric artifacts, aedric amulets, quest rewards, etc) have enchantments which, while not unduplicatable by the player, go on slots/weapons the player could not put them on?