Had the WS80s installed at Costco yesterday and am happy so far. The drive back from the city started out on bare pavement, so had them up to 120 km/h and they seemed fine. A little vague on-center, but otherwise not mushy/squishy at all for a winter tire. Interestingly, the 225/45R17 looked narrower on the rim than the 215/50R17 Continentals I just took off.
Closer to home, started to get into the storm that came through here last night. The roads were a little slick, with snow falling pretty good and temperatures just a few degrees below freezing. The tires were great, even on the packed, icy roads and intersections around town.
So far I'm pretty impressed, and think these might just be the perfect dry-pavement/snow&ice compromise I've been looking for.
Edit: woke up to this pleasant winter scene this morning and decided to go for a drive. Tires are great: good bite in deeper snow, good grip at icy intersections, and nice and predictable when they do break away. Definitely a more jarring ride over the icy ridges and bumps, though.
Now I'm missing the soft, squishy sidewalls of the Contis.