I just got "You're Doin' It Wrong" using Glyph of Demon Hunting (assuming this is pretty common, had never tried before tonight). Now I really want to know: What Proving Grounds are possible for Warlocks? Has anyone managed Proving Grounds Gold as a tank? How much practice did it take?
...what about healing? How far have people gone with e.g. Demon Hunting + imp for dispels?