Welcome
Running WS80's on my FiST and I can say I like them so far. 1 snow storm about 4 inches with heavy slush and then froze. The colder it is the more these like with most snow tires but a noticeable difference in softness from 32 to say 15. I came from Xice3's on my FoST and this are comparable but sadly need more time to verify. My Xice3's were happiest below 15 as well and really shined around 0, the WS80's seem to be softer compared to the Xice3's around freezing, but grip like the Xice3's do at 0 around 15-20.
Sum it up, so far so good, but they let you know not to push to much on warmer(around 32) dry pavement, Awesome when the temps drop, and handled the first storm with out any issues, very playful and easy to read grip in bad conditions. They also work well in the wet even at warmer temps.