Agree'd...box pleats kilts don't swish.

And 16 ounce is the way to go with box pleats, you need the weight. That's the only drawback I can see to the X-Kilt. They're usually made out of lighter material. Knif pleats have that "action"....box pleats don't.

But box pleats look unique and they cost less, and they're rather less labor intensive to make. both are very nice....I have samples of both, and will be acquiring another box pleat after I sew up my next knife-pleat.