It is a personal preference question. The advantage of machine sewing it into the binding is that it is very secure and you have less hand sewing. The disadvantage is that the sleeve is permanent unless you want to take out the hand sewn bottom edge, take out the hand sewn binding edge and cut off the sleeve. Then you can restitch the binding down. I personally don't like a sleeve on a bed quilt but that is just my opinion. It is less noticeable if you match the 4 inch sleeve to the backing material.