Please do post when you get the material. If it works out OK, it would be a nice option for DIY projects. My only concern would be that being 100% poly, it might be kind of shiny to put in an HT environment.
Still waiting for my samples. They lost the first request - reading between the lines, they only sell to businesses, so the loss may have been more than happenstance. When I called back and told them I was an acoustics manufacturer (this is at best an example of artistic verisimilitude, added to an otherwise bald and unconvincing narrative - I expect to resell stereo equipment and consulting services, but I don't see myself as becoming one of Ethan's competitors), they got a *lot* friendlier.
They do 100 yard minimum orders, which happens to work for me because I need about that much.