Not sure where the trail goes Andrew, but my sense is you're more likely to have sand than dust...but there is that sort of powedery stuff too.

The only time I've had a problem with stuff going "up" is when I wear my Z-Coil hiking boots without the enclosed heel. The paddle tends to flip sand up when I walk, but its not an up problem as much as it is sand falling down into my boot tops.

I think there's sort of a heat driven pressure pocket under the kilt...never had a bug or a bee get loose under there...

Imagine telling the officer you weren't a flasher, just letting the bee out....

Ron