I've got a zero degree revolt, long and it is very nice. I have used it to - 3F and was fine. I would like a 20f long just so it will pack a little smaller. Would'nt mind trying a 20f incubator, long with 2oz of overfill. Don't think you can overfill the EE quilts.
I snagged a 40 deg. Phoenix from Hammock Gear and added 2oz. of extra down. The extra down should get me down to 30-35. Haven't got many trips under its belt yet but so far I'm extremely pleased. Picked up during the black friday sale.
Revolt is great. I have a 30 with 2 oz overstuff. 6' here so I have an x-short. You may want a short. Depends on your desired coverage. Packs very small and light.
Will we have to choose specific length / temperature combinations for the revolt? That's not really indicated, but they offer it in pretty much every combination
I own a Mt Washington 3, and suspect you could use it as a tent quilt also. Really, any UQ could be repurposed that way, but wouldn't be tailored to fit perfectly. I'm looking at a UQ for my SO, and considering an Incubator 20 as a slightly more cost effective option to the Mt Washington 3. I'm excited to see UQs on Massdrop!