Probably a silly question but bear with me. I see a lot of motorcycle leather jackets around, such as the Vanson below, which sport "sponsor" patches sewn on them. What is the deal with it? Are the advertised companies actually sponsoring or somehow involved with, in this case, Vanson? Or is this done to emulate the look of vintage original racing jackets (kind of like sewing replica Flying Tigers patches on a new A-2)?