Ok 'according' to the gurus at EJ once you get 4pc. T8/8.5 it's time to ditch all the ArPen/AP gems and go splash some cash on all agility gems, right?
The weird thing is that for me at least it was about a 300dps loss. Anyone else tried this as I notice that a lot of rogues are still sticking with ArPen gems even when they're not mace specced?