Very busy, but here's the answer to a previous question: Henry Shires Tarptent Sublite. 19.5oz, plus another 5oz in poles (I don't do trekking poles). Packs down to 14x4" roll and apparently is pretty good even in heavy weather.
I also had a chance to throw most of the other stuff in the bag and get an idea of the weight involved. I'm not sure if I weighed things incorrectly at some point, forgot stuff, or what but everything I thought was on my list plus an extra lens came out to 16.2lbs. Which would be very, very nice.