I bought it in late December and have been wearing it pretty much, 5 days a week since then.
The leather today still looks brand new - no scuffs, marks or anything - I really like it. You get the genuine leather smell from it as well, which is a bonus and the lugs fit the Apple Watch 100% perfectly, unlike some other third party lugs which don't sit flush with the watch. The leather was a little stiff at first but it has softened up over time.
There are plenty of holes to use as well (for small and large wrists) - I find my buckle uses the 3rd hole from the edge of the watch, as I have fairly small wrists.
I bought it primarily to wear in the colder months, here in the UK as I think it may cause me to sweat too much if I wear it in the summer time. I have the Apple Nylon band for summer wear anyway as I don't find any other band comfortable enough on my wrist in the heat (the Nylon band is the only one which doesn't cause any sweating for me!!).
The Belkin is definitely my fave watch strap at the moment.