Sorry X I cant speak directly to your question, but I do have an 8 yard PV kilt from Josh that is, of course, a whole different animal than my 4 yard casual kilt.

That may be another option to consider.

And, if you needed the extra lap insulation, with your sewing skills, perhaps doubling the apron thickness would get you really close? Maybe best of both worlds. Just a thought.

Best of luck,
Brooke