Michelin CrossClimate 2 are M+S/mud & snow. Or was that your point? The snow tyre lines are mostly due to the rubber compound which is far more effective <-4c, but wear quickly >7c (ideally don't use until cold)
No -- they're still superior to all-weather tires in snow and ice. If you get a lot of that, they may be worthwhile. E.g., https://www.youtube.com/watch?v=8K8ThRGNaoM
Spreadsheet: https://docs.google.com/spreadsheets/d/1Smk69SCu5WrI3yRd_FO6...