This thread seems to be generating more heat than light.
The original questions posted by Ken Thompson still stand I think:
550 Down Sleeping Bag
84.5" x 31.5" x 21.7"
At $225 it seems like a weird combination of materials and features. Who uses 550 down in a sleeping bag? The specs are kinda sparse, what fabrics are being used? Kinda heavy.
In my opinion, until someone is able to do a hands on review, any real conclusion about the value trade off in this 20 degree bag product will be hard to see, hard to judge. The Klymit product portfolio and many of its design and engineering elements such as the use of noble gasses are unique, if not quirky.
As to ULA's motives, given that the Klymit site is selling/marketing a ULA pack, this looks like classic cross promotional partnership activity, to wit, "you help me market my product and I will help you market yours." Since MLD also incorporates Klymit components in its packs, I guess many of the posters can only hope not to see this bag show up on Ron Bell's site.
By way of disclosure, I own one ULA pack purchased from Brian but have had good customer service from the current owners. I own a bivy, tarp and mid from MLD. I am still trying to figure out whether to return my Klymit sleeping pad to REI or keep it. :-)