Has anyone tried/worked with the new Mountain Silnylon from RSBR?

I’m VERY interested in this material, particularly so if it stretches less than average 30D silnylon.  Thinking about making a small, 1 person warmer weather pyramid tent/tarp out of it (by “warmer”, I mean much of fall and early spring around here, or the occasional trips to drier, cooler, higher altitude climates in the summer).  If not that, then at least some tough dry and/or hang sacks.