I like the idea of using fleece on the back of quilts...how snuggly! And , I have used the minkie kind on a baby quilt I knew would be well loved. I used my frame and was just really careful to not stretch it.
But, I have not done one with normal fleece. I am afraid the fleece will get old and look awful when the top still looks great. I rarely see fleece that lasts 3 seasons, let alone 25 years.
Just a thought.