Quilt + Down Parka/Pants sleep system?

I'm interested in the responses to this as well. I have a BA horse thief 35 degree bag and I want to try to use the setup that you mentioned using the bag instead of the quilt.

I don't sleep well in a full hooded bag which is why I went with the horse thief. I couldn't convince myself to try the quilt when the BA bag had so much room to move.

When I look at the big agnes bags, the horse thief regular has 10 oz of down and the zirkel rated for 20 degrees only has 3 more oz. With the montbell ul down parka and down inner pants, these would add 4.5 more oz of down to the mix.

The only problem I see with using a quilt in those conditions is that the extra lofty layers make you *wider*, and it may be harder to get the quilt to fully tuck under you and keep the cold at bay. It would certainly work in the Big Agnes set up though. As to which jacket, hard to say. I use the MB ex-light for three season sleeping, and add a Skaha hoody for winter (in a WM POD30 which is much the same as the Big Anges).

What temp range do you get down to with the EX, Pod, and Skaha?

EX, POD, Skaha, UL bivy and MB UL down pants~-7C/15F, as long as the pad is up to it…

Thanks!