Quote Originally Posted by Sentinel View Post
You might be able to do higher DPS as a GLD but as a tank, I think Defensive stance will blow any cross abilities out of the water.
This.

You can tank fine up to level 39 sacrificing Sword Oath and Cover, but Shield Oath at level 40 is just too good to ignore. I think that without it you would be obliterated, or at least your healer would have a harder time keeping you up with less max HP and no damage reduction..