Got out this morning in the second snow this year but the first with my new DWSs on. Major improvement over the stock Yokos. I lost 3 MPG on the highway but gained much more wet and snow/ice traction.
I had the DWSs on my A6 also and they do even better on the Impreza. The weight of the A6 was noticeable in the snow when cornering causing some slides when pushed a bit. The Impreza drives like it is on rails. As soon as you make it slide the stability system goes nuts.