I've used it for a couple months now. Put it through snowy weather in Montana, and really hot ones in NY. The bag stays dry and warm throughout.
The shell repels and breathes moistures SO WELL. Some nights I would get too warm and sweaty, but the bag stayed dry. Our tent leaked water a few nights when it rained nonstop, but my bag didn't get soaked. I carried it with me for ~8 nights in Montana, no need to dry it out.
True to temperature rating. I love the fact that there is a foot zipper. The zippers are good quality, no snag!
Extremely happy with my sleeping bag. My husband was so jealous the whole time, he kept sneaking in my bag while I was out. Now I may need to get him one too.