I wanted a heavy duty quilt I could keep in the car and use on camping trips, so I made one with W&N, and denim front and back. It is soooo heavy, lol.
If I were going to make another that was not intended to be used roughly, I would skip the batting, and just use a layer of denim and a layer of flannel. If I really wanted the seams to be really fluffy, I would do two or three layers of flannel, but I would cut out the centers of the hidden layers of flannel to cut down on the weight.
Also, I recommend using a heavy duty thread. I had to go back and re-stitch a few seams after about a year, as the weight was too much for the thread I had used, and it was starting to come apart.