I'm still trying to wrap my mind around Cuben. From what I've read, it can be somewhat difficult to work with. Now that I have a pack with some Spectra/Dyneema on it, I can see why people like it - the fabric is very strong and durable and has a good texture to it.
Russ,
Cuben is pretty interesting stuff. I've heard the same about it being hard to work with.
If you want a sample cheap go to zpacks and order a large tent stake bag. I've got a couple of them. They're 3" wide by 10" tall, weigh 0.1 oz each and will hold 12 MSR Groundhogs. Cuben seems pretty tough too.
I've thought about a Cuben tarp, but dang they're expensive.
