I believe this thread is about all gut strings on e-bay, not Olivs or Eudoxa's or similar modern strings. If my experience with Lenzers is representative for unwound guts - and no reason to believe that the Indian strings on ebay would be very different - I doubt that too many jazz or classical players would use them. As I said, they are fun to play, easy on your hands, wonderful for slap, but at least the lower two strings will turn an upright to a close cousin of the washtub. Nothing wrong with that for the right kind of setting.