yeah, i dont want to be the poor soul working that out!!
fanned fret guitars can vary a lot. mine tend to have no more than 1.5" difference over 6 strings and i like to keep the fret that is perpendicular to the centre line around the 5-9th fret... maybe up to 12th of its a shredders guitars. this keeps them very natural feeling. chords at the low end still work the same way and chords higher up the neck are actually a lot easier... as an example bar chords above the 12th become much more usable and feel great because your hand fits a lot more naturally in that position
i have seen some done with the bridge straight which means the nut is very fanned and low position chords are more difficult because of that.
so dont assume all multiscales and fanned-frets are easy to play - look at whether the scales and centre of fan work for you. i have only done a few and they have been commissions so they are very much shaped around the players needs... they also do a lot more than what the player needs, but it would be easy to make the wrong decisions on scale length and fan centre and have something that doesnt suit them as well.