"The manafactures say that clothes come out crease free." Mike my friend, the manufacturers are selling bags, they are not planning on a lot of repeat customers. If you pull a vaccuum on a bag full of clothes there will be creases not there when you put them in the bag. The only damage I can see to tying supplies it that it would be compressed and over a period of time possibly lose "fullness" in some materials.

Good luck with the allergies, my son took shots weekly when he was a child.