I am going to piggy back on this thread instead of starting a new one.
I received my Revx 10° quilt a few weeks ago. I hadn't had a chance to try it out yet, until last night. It was cold and clear, and was supposed to drop below freezing. I set up my GoLite SL3 in the backyard, without the nest. I put my Enlightened Equipment, Revalation X, 10° quilt, and Big Agnes Insulated Air Core inside my MSR E-Bivy, in the tent. It was about 4:00 pm, so I left it until bed time.
According to my thermometer, it was 29° at 10:00 pm. When I woke up at 6:00 am, it was 27°, and I was toasty warm. I wore Sitka Core bottoms and top, with wool socks and a Sitka beenie, just like I would on a backpack hunt. I can't remember having a more restful and comfortable nights sleep, in a tent, on the ground.
There was a stiff breeze for most of the night, lowering the felt temperature below the 27° on my thermometer. I had the footbox closed up on the quilt, and I was using both straps attached to my pad. The combination of quilt, pad and bivy, was comfortable, with no drafts. I wasn't using the head portion of my bivy, and I didn't have the top of the quilt closed up at all. I had plenty of room to roll over, sleep on my side, and even my stomach.
So far, I am very pleased with this setup, and I saved weight and space in my pack.