I had our Tundra wrapped, head-to-toe, in early 2012. Other than a small nick here or there, it looks good as new now as it did the day it was done. I'm sure there is some measurable level of sun-fading, but you'd never have anything to compare it to, so its a moot point.
It does seem that pollen clings to it more than regular auto finish, but then again seems to wash off easier as well.
It wasn't cheap though. I wouldn't do it if it wasn't for advertising purposes and could be written off.