Best material, in your experience, for work kilt

[Tobus]

Steve, does Marton Mills make any solid-colour PV twill fabrics similar to their tartan ones? If so, would that be your preference over the Dockers type material if making a solid-colour kilt? Or do you think the Dockers type material is better?
@Improv1, I had a PV casual kilt from USA Kilts at one time (Marton Mills material), and the material was indeed very easy to care for. It ticked off all of your critera: it handled dirt and sweat just fine, and was machine washable. The pleats on this one were stitched at the folds, but I know that other PV kilts are not, and they hold their pleats well. Wrinkling didn't seem to be an issue, to my recollection. I sold it because I wanted to move into higher-yardage wool kilts. But if I were looking for another knockabout kilt that would resist stains and such, I'd absolutely go back to a PV kilt (I still prefer more than 4 yards, though). I know USA Kilts has options in higher-yardage PV kilts, and Steve does too.