I think it's difficult to judge how well Scottish folk music is being perpetuated. Irish stuff is clearly doing a lot better and is much more widely known. I think that part of the reason for the relative strength of Irish and Scottish folk traditions is that they have helped to maintain a sense of identity that is clearly not English. In terms of contemporary culture, Ireland and Scotland (&wales for that matter) are probably not as distant from England as they would like to be.

Al