I would not do without a serger, but then I sew anything and everything, not just quilts. I use mine on fleece and knits. You don't need it to keep these fabrics from raveling or fraying, but to help feed the fabrics evenly and help flatten all the buck in the seam allowance. I also use on cottons and blends when garment making or crafts. This does keep the seam allowance from raveling and also make a nice finish. I have also serged the outer edge of my quilt after quilting to sew binding on better. It helps flatten the edge and hold all the 3 outer edge layers together. However,
if quilting is all you do maybe you could do without a serger. Once I've had one,
I cannot.