After only two weeks, these strange-looking shoes have become my go-to walkers, replacing more traditional lace-up walking shoes.  They are very comfortable, and I feel less fatigued after walking with them.  My only concern is how they will hold up.  After only 15 miles on them, they are doing just fine.  At $50 or so per pair, I expect to get a good six months or more out of them, or I'll be disappointed.