SIT puts out a string that is called Bass Silencers. They have a roundwound core, but the final wrap is done in reverse. Here's what they say: "The process of Inverse String Winding compresses the outermost part of the cover wrap leaving the internal structure of the string intact. Exclusive to S.I.T., this design produces a silky feel which is easier on your fingers and frets, but explodes with a round wound sound! Perfect for fretless basses" Would this give roundwound mwah with flatwound feel? Has anybody tried these on a fretless?