there are MANY beautiful polyester quilts out there...and lots of blended quilts with many different fabrics. the ONLY thing you need to keep in mind when making a quilt is --
make sure it washes up ok. if the fabrics all wash/dry ok and behave they can be used...and if you make quilts that don't get washed (wall-hangings) you don't even have to worry about that. go ahead and use your beautiful fabrics and make beautiful quilts...it is yours. I have made a few quilts that have backs that are blends...and home-dec fabrics. all works.