Well, for those that say this is rare, you are right, but no more rare, or less, than the Kuuan Whetstones. A group of level 75 raid geared members pumeled through mobs in the first room on the right once heading upstairs...where many of these companion chimera and commanded chimera roam freely. There is also a named that spawns in this room, the name of which evades me, but is not marked on the map. We got two of these things to drop within 5 kills of each other, but after farming here for well over 2 hours still no Kuuan Whetsontes *cry*
GL to those who are needing this piece...