Nope, Florida man so the best I can give you is Rain, Mud and Sand and so far very impressive in all situations. And like said even though I'm 2WD, I have a locker in the rear and they do damn good in the Florida muck...
Here are a couple reviews with snow being mentioned:
“Awesome performing and looking tire. I've posted before about this tire on other reviews sites and I'm even more impress now after some winter driving. I think they look like a rock crawler tire, simular to the Baja Claw. I have them on my 1997 S10 ZR2. Off road they get great traction with dirt, mud, and snow. They clean out well and have great traction. Snow traction is VERY impressive, and I run them at 45 psi for the street with the truck unloaded and still in 2wd and they keep digging in the snow. They have some road noise, like most mud terrain tires do. They have some tread wear after 2500 miles. The compound seems soft, but thats why I think they stick so well offroad.”
“I had a set of these on my 95 Jeep wrangler for about a year until I bought a new 07 wrangler. Incredibly impressed. I have had Goodyear MT's, BFG MT's, and Baja Claws, these have out performed all of them, and cost significantly less than the others. I was shocked at how well they did in the snow as well. Off road they perform better than the GY and BFG and as good as the Baja Claws did. On road they perform significantly better than all of them. Overall a fantastic purchase. I actually found this website because I'm searching for a set of 32x11.50's for my new Jeep that I bought 2 weeks ago. “
I’m not a Kumho salesman either, lol but I think a lot of people overlook them for some reason or another. I’ve actually come to really like the Kumho brand and have a version of there tires on all of my family vehicles. They make the KL71 in big rim sizes because, lets be honest that is what a lot of people are into but it seems Kumho was not aiming to make street queen tires. Reading there info, they made them to be a true Mud Terrain tire that are still somewhat tame for the street. They also sponsor and run the KL71’s in the CORR series.