More or less redlining on ice and snow? Your stability control system must be really good :-)
Same applies to most similar sized towns in Suisse.. Different story in France right enough.
On Wednesday I went up past Glacier 3000 to Gstaad in about 5cm of compacted snow and ice, winding road in my two wheel drive volvo with winter tyres. It was fine and the wheels only spun when i did it deliberately.
Just get a set of those "socks" for that one time when you need to leave a park or something.
The tank had no 4WD, no LSD, and no problems
Honestly though the limit "legally" is 1.6 mm. Anyone can argue that the insurance can argue anything, but the fact remains that the law is the f-ing law.
And please let someone that actually had a claim dismissed come forward and let's stop spreading hearsay because it "seems right".
Even if they did dismiss anything, they could only do that with actual snow on the tarmac. If it's black, it doesn't matter how wet it is, 1.6mm is the legal limit. If they don't like it they can lobby to change the law