I have an Enlightened Equipment Revelation quilt. I've rigged mine to pull double duty as a traditional quilt and as a hammock underquilt. When used as a standard quilt, there are a few features that help keep you covered at night. There are straps that go around and below the sleeping pad, a cinch cord on both ends, and about 18" of zipper at the footbox that will encase your feet and the bottom of the pad.
I switched to a Klymit Static V insulated pad from an old Thermarest model and the two work very well together.
Bear in mind that the footbox is not the same as a full rectangular bag, but it is roomier than some mummy bags I've owed.
If I've found a downside to the pad/quilt setup, it's that at 6'3" I dont have a lot of pad above the crown of my head and there is no mummy bag-like pocket to keep a pillow captive through the night.