I'd consider some type of A/T a minimum on any Jeep, in my opinion. That's a Jeep I'd drive anyway
You'll like driving in the Colorado snow more now, compared to with those street tires. You'll also enjoy most the trails around here, but not if it's wet and muddy! Most A/T don't do so good in the mud, due to a lack of self-cleaning. Watch out for the gooey stuff, it's easy to get stuck in even with mud-terrain tires.
About those specific tires, I've only seen them on a vehicle once. It was a Wrangler, and we were driving around town in the snow. They slipped less than my M/Ts did, but in the deep stuff they didn't seem to 'pull through' as much. Neither of us ever got stuck (deep snow on the street), but I was jealous of his Wrangler's assured handling on plowed but still wet and snow-patched surfaces.
It isn't an MT/R (read: awesome), but you'll probably like them 99% of the time.
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2003 Limited, Silver - L.O.S.T. # 068957 Rockies
http://www.cardomain.com/ride/2127390/14
2006 Kawasaki KLR650