Rating: 4 / 5
My Virga is the pre-production model, I think the same one Don had; 6 oz jacket, no pockets, straight hem, 2 layer fabric. I think the production model will be 2.5 layer and have a pocket.
I used it on a 185 mile walk in the Western Arctic this spring and found the fabric to be on the less breathable side of breathability, at least relative to Gore-Tex XCR and eVENT. It felt less breathable than the Patagonia Specter pullover, which I have a lot of experience with.
The jacket's simplicity and 6 ounce weight are terrific, but the production version gains a pocket, different fabric, and gets bloated to 8 oz. After I have a chance to review that, I'll come change this review to reflect the new product.
For 6 oz, the jacket did exactly what I want an ultralight rain jacket to do: give me rain and high wind protection.
It does not afford me the ability to leave a wind shirt at home, hence the "4" rating instead of a "5". No rain jacket can do this yet.