Altberg
I have a pair of Clubman Roadsters, 12 years old, tens of thousands of miles use. Yet to leak, very comfortable, hand made like a walking boot, and can be refurbished when necessary (mine will be due in about ten years the way they are going). They do everything, including all day in the office if necessary, and are great to walk in.
The downside as far as I am aware is the waiting time. Last I heard it was 3 months, maybe someone else can comment on this