Killed him over the weekend. He spawned back to back. On the first spawn he dropped an essence and the slot 3 charm. Second kill he dropped just the regular charm.
From zone in head out to the first big field and hug left to the corner, wall behind you and hill on your left, this is your camp. Pull any roaming Kyv between you and the top of the little hill in front of you and to the right. Watch carefully there is also an Ikaav that can roam into the area to the right this can spawn Kyris. Patience is the name of the game when first breaking this camp. Pretty decent exp once you get rolling. Good Luck.
I zoned in today Dec.19 2008 and saw him up just outside the zone in fort on the left. I am not sure his ph though so he may spawn else where but did killed him today there.