Jesse,

I am aware of this product but I am not aware of it being used to treat flies or fly lines.

Ralph Cutter and I had an email discussion of nanotechnology for superhydrophobic compounds/coatings about 16 months ago. He is working with a manufacturer that is trying to incorporate it into outdoor clothing and equipment.

The test for how well a product repels water is to measure the contact angle of a water droplet on the surface.

http://en.wikipedia.org/wiki/Superhydrophobe