The tradition of orc priests goes back even further than WOD. Orc necrolytes were basically proto shadow priests. In fact, the concept of shadow priest came about after Natalie Saline delved into their teachings. Priests in wow have evolved to use the tenants of both light and shadow to varying degrees. As for myself, I want to make a shattered hand assassin to add to my enormous stable of alts. A bit sad that we don't have Kargath's sweet locks as a hair option.