This is the 2nd pair of Chameleons I've owned.  My first pair are still wearable after a year of everyday wear, but the front of the sole had pulled away from the leather more than I cared to have in a work shoe.  They started separating at about 8 months, but I used hot glue to keep them attached.  The Vibram soles have just a bit of tread left on the heel, but otherwise held up great.  Other non-Vibram shoes don't last more than 6 months with my usage.  The elastic lace on one of the shoes broke as a result of chafing on the first eye which is surrounded by plastic.

I was (and still am) concerned about the elastic lace and its durability, but these shoes feel like slippers and I have no problems wearing these walking all day.  I'm planning on sliding the lace around a bit on my new pair to lessen the concentrated chafing.