I agree. It would be nice if there were left and right hip slots and back slots. Maybe 2 slots on each hip and 3 back slots.
Light polearm - back, 2 slot
Medium polearm - back, 3 slot
Heavy/long polearms - UNSHEATHABLE
2h swords/light - back, 2 slot
2h heavy - back, 3 slot
Bastard weapons - hip/back, 2 slots
1h - hip/back, 1 slot
1h small - hip, free
short bows - back, 1 slot
Large bows - back, 2 slot
crossbows - back, 2 slot
heavy crossbows - back, 3 slot
light thrown - hip, 1 slot
heavy/long thrown - back, 1 slot
bolts ammo - hip, 1 slot
arrows ammo - hip/back, 1 slot
large quiver of bolts/arrows - back, 1 slot
bucklers - hip, 1 slot
shields - back, 1 slot
large shields - back, 2 slot
tower/board shields - back, 3 slot
pavise (if there ever was one) - UNSHEATHABLE