Several questions first whats the def on your sancturary monarch if thats what u got?
Second whats the resistances on the sancturary?
But if most people were you they would use a storm shield for several reasons first probably has higher def second it has 35% damage reduce which is great for dueling and if you want res put a perfect diamond for 19 all res or an um rune for 22 res both relatively cheap. and last reason rune words cost a lot to repair and stormshield is indestrucable.
But the few like me would use both if your full java zon they would adapt to what they fighting. for example if you fought a barb or a melee only use the ss if fighting a char based on elemental skills like a sorc use santcuary thats why there is the weapon switch. i hope that helps you out