I know two people who have them. First one is gelocks and he promised will write a review of Shure SRH 1540 and comparison to other headphones such as Beyer T5p, Alpha Dog, ... Another one who has Alpha Dog and other high-end headphones but I do not remember his nick, however you can look back to this thread or Shure 1540 thread to find his comments.
Yeah, sorry, got the PS4 and been playing the hell out of it... no real headphone listening time! LOL But will look into this soon-ish!!!