I have a Gore-tex camo bivy, USMC issue. (I think that these were actually manufactured by The North Face for the Marine Corps. I didn't buy it on ebay, but got it from a family member who's a Marine.) I tried using it in the fall in the rain in the Grand Canyon, but it was WAY too hot! For that event, I rigged a small tarp over my head so I wouldn't have to be all the way down inside of the thing. I think this same bivy might work well in winter to add warmth to my 3 season sleeping bag, so that is why I never sold mine on ebay! It also might work well out here in Yuma where I'm spending the winter, for a windy winter campout in the desert, when the temps are below 40 degrees. However, I didn't bring it with me, I brought my solo tent instead, which is way more comfortable as you have useable space to sit up in out of the wind.
I personally don't think I could stand to sleep inside of it all zipped up in the rain! Yikes! Major claustrophobic attack! However, with the addition of a tarp, or in cold, windy weather it might do well. Also, it is not as ultra-light as the other ones you've mentioned.
There is a point of no return unremarked at the time in most lives. Graham Greene The Comedians
A clean house is a sign of a misspent life.