My wife's durable leather MacCase (it holds her MacBook Pro and iPad simultaneously) has experienced about ten years of international travel and it's only gotten better-looking as it ages. Thus--when we recently purchased an iPhone 8 Plus--I had to check to see if MacCase makes a leather case for it.
Yes, indeed, they make such a case, and it's a handsome, well-made, and inexpensive one!! Unfortunately our iPhone--the Product(red) version--came with Apple's beautiful red leather case and it wouldn't fit easily into our new MacCase slipcase (and there was no way we were going to stop enjoying the red Apple case). So ... with a little ingenuity, a homemade oak stretcher, and a hairdryer, it was a simple task to enlarge the MacCase slipcase.