I have learned, the higher the quality of the vinyl, the harder it is to remove.
Sometimes yes sometimes no. I've found that if the application is going to be on a mylar sail that while it takes a little more time to remove a premium vinyl, it comes up clean with very very little adhesive left behind. An intermediate vinyl, while thicker, leaves a bunch of adhesive on the sail to be cleaned up after you've removed the color. As far as hulls, the intermediate vinyls will remove relatively cleanly if they are not in place for a long time.