The point is that each string has a in theory a different optimal scale though what is optimal is of course also a matter of taste. Me, I like short scale on D and G, but a relatively tight E, hence my preference there for either long or even extra long scale (from my personal experience, however, the D string on an extra long scale suffers because it becomes too tight). The slanted or fanned frets on a Dingwall are not for show, they are a consequence from the fact that each string has a different scale on them. Those instruments should be more accurately referred to as "multi-scale".
It's not the novelty look that intrigues me, it's the combo of a tight E with a very bendable G string.
