I believe that the 832 ice braid is specifically formulated to reduce moisture retention, ie reduce freezing.
I will try to get you a more official answer on that though.
Here is a pic of my Quinte jigging setup with the Sufix 832 braid on it and Sufix Fluorocarbon leader. Since the 832 ice braid is new, I have not tried it on the hardwater yet. I did try the braid and ice fuse last year and was very happy with them both. Just from what I seen from the 832 this past softwater season and feeling the 832 ice line in my hands, I believe it will be even better.
I will say though, if I am fishing outside, the Sufix Magic Ice Mono was my choice last year. What I found is that for a mono it seemed more sensitive than other mono lines that I had used in the past. Almost like a fluorocarbon line, yet was very manageable in the cold. I fish with a few braid and a few mono rods now.
Jeff