I use it, but not for Elite. Coming from a R9-295x2 (so essentially R9-290X as far as VR is concerned), Vega 64 is fantastic. I've got my tray tool set to 1.5 super sampling, I run games on the high presets, and the performance is fantastic as far as I can tell. Whether ASW kicks in to pick up some slack or not I couldn't really say, but that is testement to how will it works.
I haven't done any serious benching, and certainly wouldn't argue against any reviews or comparisons that have. Just saying, I'm very happy with mine