As a former Dingwall Leland Sklar Signature owner, I can say that they are quite different basses. Those mando frets really are something else and I think they are a large part of it for him because, as you say, he plays with a light touch, but can easily ground the string due to the mando frets. If I had bought the Mk2 three pick-up version to start off with, I wouldn't have sold it.