This pair of boots lasted me three and a half winters of everyday wear to work.
While standing on cement floors for hours or walking outside in  Minnesota's snowy frigid conditions my feet always stayed dry and warm.
My Ugg Adirondacks took everyday beating of walking trough puddles and snowdrifts,being accidentally watered,bumping into hard stuff and stepping onto sharp stuff, I also put at least few miles on them daily.
  Finally they gave up on me recently,leather cracked right above ball of my foot. But I have to mention mine are older version of this boot from four years ago without all the raised reinforced stitching in that area,soo I guess Ugg makes it even better now.
  I think Vibram rubber outsole of this boot isn't any better than for example my Ultimate Short Ugg's outsole. But than again you slip and slide in Minnesota conditions no matter how good your boots are.
Excellent high quality comfortable durable warm boots that saved me a lot of money,because usually I have to buy a pair every year.
I am getting my second pair for Christmas this year. Can't wait!

P.S.
So I got my second pair and a little disappointed. They used to line whole  boot with sheepskin,  now they do only sheepskin insole and around top of ankles,rest is some sort of synthetic material they call eVent fabric. It is supposed to be :" patented technology, millions of tiny pores are able to breathe at their full potential, allowing sweat to vent directly to the outside of the fabric in one easy step. "
 It is not nearly as warm and cushy as real sheepskin and,in my opinion, has same venting capability if not worse.