Not sure how it would work out on a bike, but they wrapped our work vans several years back. There are only a couple left now as they stopped doing that after a couple years. Anyway, as it began to age and pull away from the body line creases, it began to trap moisture and coming up more. The bottom of the quarters rusted out real bad and after the wrap was removed on some of the vehicles it was going to cost 5 grand to repair them due to rust. To put it in perspective, you would have had this damage on your new vehicle before your 5 year loan was paid off. Granted these vans run every day but my '09 Ford that was not wrapped has fared much better in the same amount of time than the ones that were. This is also in the Snow Belt of NE Ohio where salt is used throughout the winter to treat the roads. (Just to qualify my personal observations.)
Sorry, it is not something I would consider on any vehicle I personally own.