To tell you the truth I haven’t found a good way to get the glue out of fabrics. The cyanoacrylate (that’s what the glue is made of) will damage and sometimes react with fabrics so it’s best not to have the glue come in contact with your clothing.
As far as gluing fabrics intentionally – Miracle Glue is not designed for fabrics. It is too thin and tends to soak in too much and it damages a lot of fabrics. A dense fabric such as a canvass – I can glue. I have several people who have glue other things to fabric – such as fabric to porcelain. As I said before though be careful as the glue can react with some fabrics. We’ve had great success with neoprene (waders, wetsuits and the like).