Im sure a few of you have been wondering what this would be like, seeing that the coating would offer more protection to the fretboard than regular roundwounds. I got sick of the D'Addario Chromes on my Essex Fretless (Its a P bass and i want a double-bass -like tone out of it, not with too much muah automaticaly from flats.) Today i got new Elixir strings for my Godin, and put the old ones on my Essex. (its crazy, after 5 ish months, the old ones still sound REALLY close to the new strings. They still sound really alive, i love these strings.) But i put the old ones (dirty/ugly, heh, but sound good) on the Essex fretless. They sound quite unique. If you keep your left hand fingers quite flat and all, you can get a nice deep , upright ish tone. But if you do some wigglin and dancin' , you can still get great muah, just a different kind of muah. More throaty, less nasally, kinda more Jaco ish, except with a P bass twist. Basicaly if anyone has an old set of Elixir roundwounds and wants to try em on a fretless, go for it, unless its a really nice fretless and you dont want to risk damaging the fretboard if you keep em on there for a long time. Being that mines a $119 Essex , i could care less. (its a great bass though, with the exception of one dead spot on the G string, it plays/sounds super).