I have found that the CVTII works sort of like a hill decent control on icy roads if you put it in one of the lower ranges. These big 4 bangers have a lot of back pressure.
As for the HDC, if it can be added by simply flashing the engine and transmission computers, I would be happy to pay to have it done. On a really steep incline, the CVTII is not low enough either...
2008 Jeep Compass Limited 4x4 CVT
Brilliant Black Crystal Pearl Coat