Not exactly about men's suits or quilting but I've been collecting drapery and upholstery fabrics from the thrift shops to make jackets, skirts and dresses for myself. I had an aunt who was a CEO down in Houston years ago and she had all her suits made from brocade type drapery fabrics as it wore bette and looked smart. She was a smart lady also. Some of the more fluid type curtain fabrics can be used to make blouses also.
Now to just find the time to make them all.