i think JDC was really liking sweep picking on the fanned fret - one of the things i wanted to dispel is the idea that they are difficult to play... which i think i really did.
i really let it down on the tonal advantages by going with the wrong set of strings... but i will prove that to you all another day. Its all part of my on going experiments with scale length, string gauges and different tuning
sweeping felt a lot more natural due to the angle of the fingering hand to the angle of the frets I think, especially with your basic 5 string minor sweep, I was messing up with the pinky on the pull off on the highest note in a sweep but I think that was down to muscle memory from playing straight frets
the sweet spots for pinch harmonics didn't really move as much as I thought they might, so they were not a problem either
WezV what scale lengths does fan fretted prototype have?