Ryan, Bill, others, re: temp ratings.
1. The 11 oz quilt is definitely a summer quilt. I would not want this in AK, even combined with Cocoon hooded p/o and pants, at the temps, wind, and humidity we are expecting up there. Low temps will begin in the 20s-30s. I think with Cocoon gear, in foul conditions (wind, humid, cold, wet) this quilt would be "ok" for me in the 40s with cocoon clothing.
2. The 20 oz quilt, combined with Cocoon clothing, is a solid 2-season and marginal 3-season setup. I would call something that has the insulation of say, a TNF Fission, to be a solid 3-season synth bag. This has slightly less thickness than the Fission.
3. There are no zippers. Footboxes are sewn closed partway up, and you can tie them shut along the upper girth if needed to conserve heat.
4. Costing has not been done yet.
5. WPB items are not Nano/Cuben fabric. That would be bad, it doesn't breathe. But yes, we looked into it and you can make some really light stuff! It's a new type of Pertex Quantum Endurance.