PLD: Do you tank with Sword Oath on? I do.

[Coatl]

In FcOB if the healers and everyone else is comfortable with the fight but still need to squeeze in that little DPS, having the PLD in sword most of the time helps out. They only really need shield oath for big hits, like the Rip from Emegud in T10.

For dungeons, I'm not really sure. Sure you hit harder but you will make the healer have to heal you more and in turn they won't be DPSing as much. Though If your significant other can find the time to DPS and heal a PLD in sword oath then props to them.