The first thing I will be interested in though is how accurate it focuses on Canon.. the only thing that Sigma was lacking in the recent models was consistent accuracy.
The RT in the present state is a no-go for me, since it offers nothing more in terms of wokflow. It's highlight is the Windows explorer / compatibility and full USB port - invaluable in corporate...
Reading these comments, I wonder if dpreview is being too soft. I would delete and ban like half the people with unrelated and/or degrading comments. They are giving away money for a photography...