As someone else said, it's generally good to keep your skill up in both if you can in order to give yourself some flexibility. However, for Pallys 1HS will probably be your go to the vast majority of the time. Since you have snap aggro spells, you don't really need a 2HS for the extra damage to help with threat generation in the way a Warrior does pre-dual wield. Better off having the extra AC and any stat boosts from a shield.
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