I would still go with the braces (suspenders). There is a type that fastens on the side only.

I agree that the clips could damage the kilt, so I would suggest sewing a tab on the inside (catching the hair canvas interlining) and clip the braces to them.

I have used them for years with work clothing, and find them much more comfortable than the usual "fore and aft" type.

http://www.duluthtrading.com/home/ho...G014013&admkt=