Last night, I wasn't paying attention to what I was doing, and instead of queuing Aeven up for Direbrew, I instead queued for a random heroic. I didn't realize what I had done until I phased in to the Oculus.
Understand this: at this point in Aeven's career, I'd used her to tank a whopping 0 (that's zero, folks, nil, nada, zilch) Northrend heroics, and a whopping 0 (again, that's zero) Northrend dungeons at all. Aside from Direbrew, I'd not done any tanking at all for months.
But... this was the Oculus. Easy pulls, plus the final fight is on drakes, even, so that's not even like it's a real fight, right? So I buckled down and did my best. Thanks in very large part to a most excellent healer, and good DPS players, I was able to do a decent enough job. It was a sloppy job in places, definitely. Those stinking whelps in the first pulls are annoying as all get out. There were points where I was mashing buttons frantically, though, trying to re-teach my fingers how to handle Aeven's abilities. Oh, and I'm pretty sure I ran the whole thing without any auras up at all. Bleah.
Still, we made it through to Eregos without loosing anyone.
Oddly enough, this was the tough fight - I was on a red drake to start with, and Eregos kicked my red little butt all over the map without much of a thought. We wiped, and on the way back, I mentioned that I was used to healing... and the healer suggested swapping roles, so that he (with his mondo health pool and stats) could tank while I healed.
Bingo! Took a while, but after a few minutes, there was one dead internet dragon, and Aeven had her first Emblems of Triumph and Stone Keeper's Shards. As a side effect, I find that I'm not nearly as worried about tanking heroics as I was when Aeven dinged 80... so I may run a few more with her in the next couple of months, just to get a feel for tanking as we head into Cata.