Kay the roads were plowed and just wet by the time I got in. But, I played around in my parking lot. The XDS does do as advertised, and just modulates the throttle, so to speak in low traction situations. So where as the ESP on the MKV would be constantly grinding the ABS to try and keep you moving forward, this thing just keeps right at the slip point and moves you a long. SOUNDS a hell of a lot better for sure. I also tried some e-brake shenanigans with the ESP on and for whatever reason it doesn't shut down your fun until your tail is waaaay out. On the MKV it would do no such thing. If you wanted to play around in the snow you had to turn off ESP, doesn't seem to be the case with this car.
Anyway, haven't done any real driving in the snow yet. But my initial impression, is that in light snow (I'm talking less than 2 inches on the road) I will probably drive with ESP on, where as with the MKV that would be stupid. If it's a damn blizzard out however, and the front of the car is acting as a snow plow, I tend to favor no ESP, so I can feel the tires spinning, the car sliding, and react accordingly without any electronic interference. My 2 cents.