OK - I'll try. Both my KiltMart and SWK Standard are (virgin ) synthetic. Both swing and drape well. Both look good with T-shirt or coat.

The differences:

SWK - tighter weave and selvage
KM - loose selvage, some fabick "pills"

KM feels courser than SWK

Sewing on SWK is better.

KM seems hotter?

KM liner is smaller than SWK

SWK buckles are better than KM as is the leather.

SWK reverse pleat is deeper.

That's about it.