I just ordered a Marmot Force 2P to try out with the wife. It's a double wall, dual vestibule, dual door, freestanding tent that only weighs 48oz. Not exactly ultralight but it's the only tent I've found with those features at that weight. It has the same floor dimensions as a Tarptent Stratospire 2 but a smaller interior height which diminishes usable space. I'm hoping it will be able to withstand moderate (20-30mph) winds and very light snow. I'll post some pictures of interior space and take it above 10,000 feet in some inclement weather and see how it does. If there's any interest, I'll report back here.
I could see this as a nice lightweight tent for short trips with the missus.

