As a valor 67 pre-1.1 battlemaster I've opened 42 BM bags and have 2 pieces of BM gear (belt and gloves) to show for it, and they were from before the patch. Post patch I've gotten 18 bags in a row now without BM commendations.
Incidentally I also have 2 pieces of rakkata gear, including the mh, from one hard mode operation run that took less than 2 hours on the first try.
This compounds with my unfortunate choice of a bottom tier pvp class, the sniper/gunslinger. It's gotten more frustrating by the day and I'm at the point where I've stopped playing.