I am thinking of ordering a new 6-string fretless Carvin Icon series. I have never owned a six string before, let alone a fretelss so I am going to hvae to get used to it. One thing I have been considering, however, is the asymetric neck option. Does this make a wider neck, such as the six string, more comfortable? Also does it have any effect on playability, or how fatigued your hands become?