I have a 20 deg bag and 40 deg quilt. Together, Enlightened Equipment says they should be similar to a 0 deg bag.

I was trying which way seems to work best when using together and it seems like putting the quilt inside works well. This is probably because I have an extra wide bag. 70 inches at the chest. I just could not handle a 62 inch bag with a 60 in girth at the shoulders.

So with the quilt inside I don't have to worry about it sliding off as I sleep. And it actually feels some of the extra space around my legs and torso so I think that is better and it does not seem like I am compressing it much.

Any one else doing this with bag+quilt? and if so which way do you use them together?