At least on my game. Been trying since release date to get this damn chest piece and I can't ever get it. Every chest engram has turned to Voidfang Vestments, xur has been selling Voidfang Vestments all the time. RNG is beginning to piss me off so much.
I can't for the life of me even get one from nightfall. I get any other exotic that I don't want.
-
Good things come to those who wait..I have yet to get the chest, but now am looking forward the purifier robes instead. You just have to be patient and use what you can get now and what works best for you.