I played one of these today. Theyre fantastic things. Im not one for more than 4 strings, fretless basses, etc. But this was really nice. I found that, due to physical frets being there the fretless side was much easier to gauge as to where the frets really would be on the fretless side, if that makes sense. Oh and a bit of chorus thrown in and it sounded phenomenal through the Laney combo they had. Fantastic bit of kit if its your jam.