The swing of your kilt

[McMurdo]

I can second that. I've purchased two PV kilts from SWK and folks say they like the swing.

Just a point of clarification
What you purchased from SWK was Acrylic, not Poly Viscose

As to the swing of your kilt, to my mind it has more to do with yardage than material, an 8 yard kilt even in Poly Viscose has a good deal of swish and swing this diminishes with less yardage.