I always have what you might call watch rot... my skin and band smell foul where my band touches. I also have a PH that breaks down leather pretty quickly, I usually wear out a steering wheel (if it is leather wrapped) in about 18-24 months. So leather bands were lasting around 6 months.
I was skeptical, but this band ... not only no more watch rot within a few days but with the breathable band and the leather not touching my skin it's a win win since it will last much longer.
If I had one con, the band is very rigid and well made, but a little more flexible would be nice sometimes.