Larry...I have driven on ice on the I-40 in New Mexico between Tucumcari and Albuquerque in Jan...not fun...and that's quite a ways South of us already, and have also heard of folks being stuck in one spot for a couple days due to a passing snowstorm. And further North from there is even more of a possibility of running into that. Not so bad if you are headed down there for a couple months...you just get off the road and wait it out, not so bad, but when on a tight schedule...thats no vacation...If you leave Canada in Jan and its in the -20's, you won't be staying in your RV the first night or 2, you will be staying in a hotel, and possibly same coming back home.
You could luck out and hit great weather and warm enough to use it but in Jan that's a crapshoot!
2011 GMC Sierra 2500HD
2014 Rockwood 8289WS, Diamond Pkg.