Purchased a Nomos Orion in June and have worn it quite a bit without issue. On two occasions in high heat doing a lot of walking (10-15 miles around the city) I developed a fairly bad rash/dermatitis under the band.
Sweat/heat seems to be a factor, however I’m wondering if cordovan (horse) allergy is a thing? I don’t recall having this reaction to other leather bands in the past.
It’s not an allergy… you had sweat unable to evaporate due to be trapped under the band and friction from the leather rubbing on your wrist. This is completely common and why everyone suggests not to wear leather when wearing you watch and being active