The reason I'm not updating to Windows 8.1 is the drop in 3D performance in most games, on my home PC I am a major gamer and losing 5-6 frames does bother me (be it small). I will eventually when they properly patch it and I don't have to worry about losing performance.
I have my visual style customized to appear as windows 8.1 using custom windows 8.1 visual themes and a theme patcher. Everything (folders, startbar, command buttons) looks like it is part of windows 8, yet opera seems to check something else when deciding what skin to use. I am writing this reply from my laptop with the sexy sleek windows 8 skin that opera sports by default and it's just making me more annoyed.
Thanks for the replies guys.