In reply to Davelim8850:
I had two pairs - bought a second about 20 years ago when the first wore out. Wore them in Ouray in -20o to keep toasty when others in leather were freezing and I last wore them on Island Peak last year and Elbrus in 2018 also in very sub zero temperatures.
No shin problems, no discomfort, no difficulty walking or climbing. Slightly baffled that so many had problems.
Returned to the Koflachs after years of blisters, pain and cold with my Nepal Extremes and others. Quite a relief to find they still worked fine