I am planning on a Silnylon/M90 bivy project. I have concerns about the slipperiness of the Sil floor. Sometimes I'm sleeping on a slope, or whatever. How much problem is this?
Also, how waterproof is M90 for real? DWR is not WPB… or they'd advertise it as such, right? I want to be able to stand some rain w/o a tarp.
SlimJim

