Nighttime temp got down to 42 degrees, and I cowboy camped in the ultra 20 and my MYOG bivy.
My impressions are that this is a great quilt. The shaping of the quilt helped to prevent cold drafts during the night.
I was surprised that with a 1.5 inch pad in the Bivy (the Bivy is 72 inches in shoulder girth, I had some compression in the leg area of the 800 fill down. That wasn't a problem I had with my Synthetic quilt and will take a bit of adjustment, however, I purchased the quilt because of my girth, which is 60 inches around my chest and upper arms.
I'm a side sleeper an move around a lot at night. Being as warm as it was out, I didn't need the straps at all. There's plenty of room in the size long.
The only real problem was that the quilt was too warm and I ended up feeling clammy in the upper body area from sweat. I woke up around 3:30 chilled, but just pulled on my Micropuff pullover, folded the quilt down, and went back to sleep.
I am having trouble finding a good hat, however. My polar fleece bomber hat was at it's limit at 42.
This one's a keeper in my book.