Got an email from someone who has just gone into manufacturing UL hammocks, a synthetic quilt, and tarps, with a pack still in pre-release. He has a hybrid hammock tarp with a Cuben middle and silnylon on the lower sides. The light hammock is longer than a Nano and is available as a single layer at 8 oz. or a double layer at 12 oz. The website is
http://dphammockgear.com/index.html
At the bottom of the "purchase" page, materials used for the products are for sale separately.
I have seen none of this gear in person, and I'm not connected in any way to this vendor. I had sent a PM to him at HF about a month ago inquiring about a used DIY tarp that he had.