Question.... have you ever adapted to an ergonomic keyboard? You know the ones that are humped up in the middle and split into two banks?
It's EXACTLY like that.
It looks weird, but if you use it without watching your hands, it's completely natural. high strings have a shorter scale just like how the higher frets get closer together, but when you roll down to the low strings, they have separation like a baritone.
The 7th fret is where the horizontal fret goes to keep low chording as close to normal as possible... most of the scale-length fanning happens down at the bridge.