The KMs are crap mainly due to inferior braking, but not sure about KM2s. The MTRs are much better in 2WD and 4WD. However, a DuraTrac (or Hankook RF10 or that newish Toyo AT) will be a great option unless you can use a true winter tire which will do far better in the city/highways. Offroad on fresh snow, I would prefer something like the MTR or DuraTrac. I have 35" MTRs now, and just used those in some majorsnow. They do pretty well for a MT, though my Hankook Dynapro RF10s on the 4Runner do even better in the city. Basically, a softer rubber compound and more sipes will do better when cold/snowy.
2014 JKU Rubicon- all white with tan leather
LOD front bumper, AEV rear bumper, TeraFlex tire carrier, Shrockworks sliders, Method Standard wheels, 35" MTR Kevlars, Englewood driveshafts, Synergy 3" Lift, Rancho 9000XLs, Artec truss, Teraflex C-gussets, Grabars, HotHead Liners, MORE dead pedal, Tuffy underseat box, Uniden 520 XL, 10lb CO2 tank...