Under what conditions do you use a Bivy?
I would love to be able to use them but conventional bivies push my claustrophobia button bad. I tried several and discarded all. In particular I really wanted the TiGoat Raven Omni to work for me. One night I set it up in the living room and climbed in it. About a second and a half after the zipper closed the panic attack started and I very nearly cut my way out of it before finding the correct zipper. I did not know I was claustrophobic .. I've worked under cars and in confined spaces under houses quite a bit. It really was not pretty.
I use bug bivies quite a lot and shelter under a tarp overhead if needed. No such issues with them.
One thing that comes to mind .. my bug bivies are all hooped bivies and keep the material from touching my face. None of those conventional bivies was hooped. Probably before I completely give up on them I need to try a water repelling hooped bivy.