I'm rethinking my stance on Expertise and the gloves. Maybe they are worth it.
I have roughly 110 AP at 20 and the loss of the 2 agility would be -4 AP (or about -4%) for the Expertise gloves. If these were PvE fights, I'd say the Expertise definitely isn't worth it....but in PvP fights, I don't loose by 4%; I loose by not landing that one stinkin' hit that didn't land right before the opponent gets hit with a nice fat heal.
A Dodge only pushes your damage back by the GCD (and then in long fights it doesn't even do that as you'd spend some time regenerating energy anyway...unless he dodged your very first attack, the time isn't wasted), but assuming of course that he had dodged one of my prior hits in that scenario, Expertise would save the day.
I've had a LOT of pally's down to 1-hit-from-death before they got a heal off and I'm not sure if any of those involved dodges (probably not), but 4% more damage wouldn't have changed anything...another hit would have.
...none of that mentions the loss of 7 stam of course...but offensively, I think the gloves very much boil down to personal preference (also not to mention that fact that I never see Expertise on 20's and its therefore rather sexy).