The freezing rain/drizzle was a surprise to me, and surprise to hear a Centurion out there and the Cirrus on the ground waiting to go. As noted above, the Cirrus FIKI system has freezing rain as a limitation. Boots might as well be useless as they'll do nothing for the water that runs down the wing and freezes behind the boot Severe pilot error all around on this one. Again. At best this is frustrating, at worst infuriating.