I haven't had any enmity issues on WAR apart from times that other tanks were also in tank stance. I suppose I would if I were able to stance dance perhaps but since that isn't an option in 50 content it's kind of a moot point.

I've generally got no issue with going OT, DPSing is fun when I get to do it, but I still don't see a compelling reason to OT without Deliverance against other tanks who have their DPS stances readily available.

I encountered it again this morning. Merrily doing my thing since no one spoke up in alliance chat when I said "I'll take MT if no one objects?" and them I'm losing the first boss (again in WoD) to a PLD in Shield Oath.

Best part is he was standing with the group so the boss spun, lasered him and killed several people including both of his own healers. I can't lie, I lolled.