I've been using Targe of The Blooded but when I switched back to a normal shield, it still has the sword hitting sound effect and not the normal shield bash one, and whatever enchantment is on my one handed sword at the time is inflicted when I do a shield bash, even staffs(staves) pass over the enchantment to the shield, and shield bash works up my two handed. I really don't think this is normal but I'm usually dual-wield so I don't know.