Tom, I'm familiar with the KC emergency snow ordinance, which was in the back of my mind when the tire issue first came up (I've always been legal with all-season radials). We can take it to the local thread, though.
At the time I got stuck in a drift, it was in front of where I used to live; I was pulling up to the mailbox (a curbless area, kind of a ditch, picture a Samba Green Royale Honda Del Sol snout deep in snow). I should have known better than to even try. It's embarrassing having to be towed in front of your own residence, at the entrance to your driveway
BUT, it's VERY handy having a family-owned automotive service and the tow truck driver be your brother (no charge)!