I've made three fleece-backed quilts - a wheelchair size, a lap quilt and now a bed quilt. I love working with fleece, it sews beautifully and doesn't stretch during quilting. Glue-basting works well on it.
I used batting on one of the quilts, for extra warmth, but I'm not sure it's really needed. The fleece is so cuddly and warm. I only hope that it will keep its qualities over the years. I can't say anything about minky because it isn't sold here.