Interesting point Lfalex (whatever your latest version is). Ibanez in particular have experimented with different fanned fret loci as you can choose where to to align the multi-scales against each other, as well as how severe you make the fan, i.e. 35, 36 or 37" on the 'B' and 34, 33 or 32" on the 'G'. Not seen a reverse 'long-low, short-high' design but I'm sure someone's done it.