I bought a Shuker Uberhorn fretless last year which turned out to have a duff truss rod - in a way it was a blessing, as I took it to Jon who is almost finished rebuilding it with a new fingerboard and truss rod and a scale length revised from 35" to a tad over 34". Hoping to pick it up next week. OTOH, the Barcus 6-string fretless I got for a pretty good price (IIRC it was below the original starting price) is great.
Incidentally, the ludicrous fan-fret Megatar didn't sell last time out and it's back again. If you want a straight 12-string tapper, fine, but all Megatar/Stick tunings that I've found have the six bass-side strings with the lowest string closest to the centre of the fretboard, completely obviating the point of a fan fret. You'd need chevron frets to make sense of it.