I think we should slow the roll on KO's being great on snow and ice, and this comes from direct experience running KO's on a tundra and tacoma, and running dedicated winter snow tires. These will absolutely not perform even close to a snow rated winter tire in severe conditions, and part of that is due to the harder compound, part due to siping and tread design. No rain on your parade, just real world experience. They do look good though, but the Pirellis have also been excellent (as a warmer seasonal AT tire) and I'm guessing also less rotational mass than the KO's?