Gortex might be fine and good on occasion, but it does not keep you dry as advertised. I have a gortex pullover coat. And I can get plenty wet under the coat in a real storm where the rain comes sideways, topways, and even coming upwards. My serape made of llama hair on the other hand... While I still get wet, I stay warm and mostly comfortable. After getting drenched while wearing gortex, it actually holds the water in, which is a real mess. It seems impossible to get dry under the gortex, but that could be just me. Have to yank the pullover off, which means I am now wet and cold. Not my favourite combo. Llama hair serape breathes, dries quickly, and allows me to dry quickly while I wear it. Being a loose floppy dangling sort of garmet, I can whip some of the water out of my serape, or even wear it a different way to allow it to dry better. Based on my experiences with this loose flowing garmet, I believe that a great kilt and it's wrap portion could in fact, function in much of the same way. For those wondering, a serape is a hooded poncho wrap type garmet.

I am not 100% sure how PV functions under these conditions, but from what little I have read it should perform somewhat well. Maybe quite good, but I would have to see it in action my self. I don't think a gortex kilt would be all that great really.

On the other hand, I would be curious about how an oilskin kilt would perform. Would that be the Aussie-kilt? My duster is made from oilskin. Works like a charm. But it's hot, heavy, and kind of bulky.