Personally, I have never had my aluminum ring 'patina' to the point where it looks horrific, but as always, ymmv.My black BS has sharp button edges. I’m waiting for a replacement.
Other than that the case is excellent.
Strong magnet.
Great leather feel.
One thing that almost all the cases have that I’m not a fan of is the aluminum camera ring. It’s going to get scratched up and that won’t look very good. I would like a different material there. I know one or two other cases wrap that part in leather but I really don’t like the bulky look of that.