Ah - ignorance is bliss - I put lots of fabric into my reverse Kingussies.

I have several which are 7 to 8 yards, and the camo one I am working on will be 5 strips of 5 ft, cut selvage to selvage so the pattern looks right.

I will make the front apron with two layers of fabric, shaping both sides, and put in quite deep under apron pleats, which takes a fair bit of fabric, and the inverted box pleat is double the size of the normal pleats, minus an inch or so as the two edges meet.

I never thought of the reverse Kingussie style as particularly frugal in the amount of cloth it uses - but I did work up to it on my own rather than copy an existing kilt.

Anne the Pleater