That does look interesting. It’s rated “delivering an EN-13537 rating of 20°F”. So I’m wondering if it’s 20F for ‘comfort’ or ‘extreme’ or some other limit:
http://en.wikipedia.org/wiki/EN_13537

22oz for 20F bag sounds good. As usual, I wonder what would be the weight if they used 850 down; maybe it would be 19oz. And then what if they used WM material; it might drop to 17.5oz--- for a 20F bag. That’s what my WM POD30 weighs and it is comfortable at 30F.

Just estimating out loud…

-Barry