I have no idea. right now I am at 320 perception and 323 gathering with 579 gp. I am wondering if it is possible to be ably to have enough gp/skill to get these nodes at 100% and use unearth II. But I guess if it's capped 650gp and enough gathering to get to 90 is all u would ever need then. Toil of the mountaineer> Sharp Vision> Unearth II would be 95% gathering rate with 31%HQ rate would probably be better than 100% gathering rate and 11%hq.