Hi Martin, I did not mention it but I also tried vertex creasing. It felt like a hackey way to accomplish the corners. I fiddled again with the holding edge approach and get the result but with minor pinching / deformation. As you mentioned, the vertex crease in this case is the quickest and simplest one. I think it renders the best result.
Omar, I will follow the pothead course, it’s in my library. I guess I have to cheat a bit more instead of going for perfection.
Holding Edge approach

Vertex crease approach

Omar, Martin, thanks for sharing your wisdom with me.