I need about an hour of warm-up before I stop sounding like pregnant elephant seals. My buddy Peter, came over and retuned it in open C and look-out ....it was wonderful. You can search You Tube or better yet check out Bumblefoot's cameo on Guthrie Govan's new amazing album to hear a master in action. I doubt he gets to use it with GnR.
We have a Surfreter (our second one) and I'm bringing it to the Toronto Music Expo....if you want to try it, OK....but thousands might hear you

:tongue:
Pics are here:
http://www.diffusion-audio.com/store/cart.php?target=product&product_id=16184
Why would you need a fretless? Hmmmm it's not for the faint of heart and you're not going to play it with the strap hangin' 'till the knees but.....you can play perfect fourths and fifths, vibrato like nobody's biz etc etc. Also, most (but not all) of the real masters of fretless bass do wonderful melodic soloing way up high....which is the guitar's register so....
and, I'll say it again, it's not the same as slide 'cause that always gets mentioned.
Andy