Daggers (both single and duel) should be stored on either hip.
Two-handed weapons should be stored on the back.
One-handed weapons (single) should be stored on the hip
One-handed weapons (duel) should be stored on the back
Staffs and bows should be stored on the back
And, yes, this is a minor issue but one that can easily be fixed in a future patch from Bethesda. I'm not asking it to be fixed in this week's patch over even any patches within this year. It's just something to think about.