I picked up a pair since I love TNF Vectiv Flights, the Sky however, totally different shoe. Less stack, much more ground feel. There are some nice improvements, laces and materials. I loved them on my first 10 mile run. Then I took them on a run with over 2k of vert and 18 miles and the collar destroyed my ankles. There seems to be a firm unforgiving cord like material on the collar and it rubbed hard on my ankle bone on the downhills. I picked up some insoles to give my heel a lift, hoping to reduce the contact, but it only improved it marginally. I will likely relegate these shoes to short fast and flat training sessions.
Great review, honest and informative. looking for a fast comfortable shoe for 50km on single trails which would you suggest Peregrine or Xodus ultra 2 ? Thanks
