I have used the serger for sewing around a quilt before adding the binding, works great. Take your time and don't pull or push the layers, makes them nice and even and FLAT!
Or use the serger and sew around the outside using the sandwich method, rights sides together with a batting or flannel on top, leave a foot open for turning and sew a curve on the corners intead of square; turn right side out and slip stitch by hand or sew around outer edges with your regular sewing machine. I like this for baby quilts especially.
Carol J.