Not sure if I can fully rate it, since it hasn't snowed yet. As for comfort... its really soft and comfortable.  Cant wait to try it out in Chicago. Will keep you posted on how it fares.
The only problem I have is the color.  From the picture it looks like a dark red but when I got the color is dull burgundy reddish purple not this blood red color on the screen.
1/16/2013
UPDATE: Its not snowing in chi town but its warm and soft.  4th day of using it comfort level went down.  Its not as cushioning as last time.  I walked around with it for 20 minutes and I was struggling.  Had to take a bus home.