Sony 12-24mm lens? Any first hand experience?

Hi!
I am wondering whether anybody has first hand experience with the Sony 12-24mm lens? Anybody who owned Nikon 12-24mm or used Canon's 11-22mm wide angle lenses and can compare them to Sony's 12-24mm wide angle lens?
Thanks!
I am wondering whether anybody has first hand experience with the Sony 12-24mm lens? Anybody who owned Nikon 12-24mm or used Canon's 11-22mm wide angle lenses and can compare them to Sony's 12-24mm wide angle lens?
Thanks!