I think the KM2 sucks. No siping, terrible in rain and snow, and they run small. Lastly, they are overpriced.
For your needs I would look for a MT tire that has siping. That way you're good for the mud but you also will have a safe tire for the highway. Cooper STT is a great choice but there are many that are similar.
~Lots of modded Jeeps and a Toyota 4Runner~
My favorite quote from the press release.. sad but true: "Chrysler claims its products, especially the Jeeps, can handle all sorts of terrible conditions, churning through muddy swamps, climbing mountains, and crossing rivers. Turns out they cannot even handle a car wash."