I've gone through 2 pairs of the mammoths as house slippers.  In those, the lining gets dirty and flattened and needs to be washed (or replaced).  It's darn near impossible to remove and replace the linings.  So for me, this Yukon shoe is not only far better looking, but the lining can't be removed, so I won't be tempted into a frustrating tugging match.  Haven't worn them long enough yet to get dirty and need cleaning, so I'll cross that bridge when I get to it.  Since the lining isn't so overly fluffy, maybe it won't be as big an issue as with the mammoth style.