Read through the whole thread. I have been farming skulls in PvE land, as well as farming all the new PvE sets to use in PvP (since the PvP sets suck, whole other discussion)
I spend most of my time in PVP (XBox) and spent almost all of last night in Cyrodiil getting the skulls. It was pretty easy actually....1. Hit a Cyro delve, kill a boss, 2. Do a dolmen, kill the boss