Very beautiful. Have not had problems with chafing. However, they're very fragile where the thin fabric. Small holes, probably caused by small twigs, has gradually emerged; however, I have been able to ignore them.
Having now had them for about six months so it was a 1.5 cm. big hole on the right shoe: It is on the right side (inside) of the pocket for big toe. This made the whole shoe suddenly sat very bad and after a few miles. I got a blister on the right toe.
This is a shoe for running on a base without twigs and other sharp objects. Now I will instead try Spyridon because they do not seem to have the thin fabric that TrekSport have.