More succinctly, can I have a good sword or shield equipped for bonuses whilst my hands are busy either casting spells, or holding bound weapons?
I think I'd like my first character to fight largely with bound weapons only, but I'm curious if I'll have to forfeit two equipment slots worth of bonuses to have this playstyle, or whether you can have a sword equipped on your belt giving you such things even as you fight with a bound sword?