With a Hexagon you will have an odd side. It is not the same if you turn it 90 degrees. You go from edge to point. The standing/banking nomenclature was just something I came up with to keep the adapters straight in my head. Standing fits better in between the legs, and banking...well...banking banks. There isn't a right or wrong way as long as you are happy with the result.
Possibly. I do not have a yamato zero. I'd be willing to make one if someone would be willing to lend me an original zero.