Fanned Fret guitars are actually more comfortable to play than straight frets because the fretboard follows the natural angles of your hand.
Supposedly it takes about 1/2 an hour to an hour to get used to it.
Heres a video of a multiscale (the makers version of the fanned fret, he works out the scales differently) made by Perry Ormsby; probably the best luthier in Australia.
http://au.youtube.com/watch?v=Y3wqZ0JovqU