Alan,

The Traditional Kingussie has a box pleat in the center back that is outside and all the pleats point forward. You treat the reverse pleat at each apron edge just as you would on the right side of a knife pleated kilt.

The Reverse Kingussie (aka UK) is just the same as a regular kingussie but inside out. the box pleat at the center back in inside and all the pleats point backwards. You treat the apron edges just as you would the deep Pleat of a knife pleated kilt on the left side.

It is a normal knife pleated kilt from one apron to the center back with a reversed or mirror image on the other side. The only difference is on one you have two deep pleats and on the other two reverse pleats.