I had DWS's on my 03 before I made the switch to Kumho KH18's in summer and Blizzak WS60's in the winter.
In my experience, DWS's are okay in snow when they are fresh and have plenty of tread left. They have a nice ride due to a soft sidewall. Consequently, you may have to run more air in them than in comparable tires to achieve the same handling. They make a lot of noise while cornering under certain conditions.