Hi Slinkedog,
I'm glad you asked. I only have about 50 miles on the the Koobi saddle but so far, so good. My longest ride has been 20 miles. Of corse the sit bones have to toughen up to any new saddle or new rider but the adjustment for this one has been pretty quick. I am happy to report that the numbness issues seem to have been resolved by the Koobi. The info with the saddle says that the leather will break in after a few rides to fit each individual and I can already feel that happening. I think I am going to be very happy with my Koobi and the price sure is right at this time.
Sandy