I had considered that, but had two concerns:
Would the sewing machine foot snag the climashield, or it is tough enough to take that without tearing/catching?
When I flip it inside out, will the climashield folded over at the edge create a bulky seam? I suppose this depends on the seam allowance, and the 2.5oz Climashield is so thin it probably won't bulk up, huh?
My other thought was to sew just the nylon together, flip it inside out, and slide the climashield in. Then, sew a line a couple inches from the edge to quilt the insulation in place. This would create less of a stiff edge at the expense of some more work and that dead spot around the edge.
On the other hand, this is a trial quilt made from cheap materials so maybe I don't need to over-complicate things if the very basic sew-all-three-and-flip method works.