i've used them for finished quilts--- the only (down) i can think of using them for your stash----everytime you want a piece of fabric you will have to open a space bag- paw through it= then re-vaccuum to close the bag---seems like alot of work= but i am constantly (pawing through) my fabrics they would be way too much work in my sewing room- maybe you are different?
they work fine for storing textiles in though.