The first time I lost it to a 'frost' DK, I was pissed. I mean sure the proc can do extra dmg for a dps, but the heal is frequently going to be wasted for them outside of AOE environments.
At the end of the day though, I'm more annoyed at how things are coded than by how people role. That DKs can get a role bonus on Agi items is especially annoying. I role on anything and everything I think is an upgrade. And actually, in LFR on my mage, this one DK won both Tier helms (I rolled on both too), so I whispered him if he didn't need both if I could have one, and he Traded it to me
