Sadly, clear plastic tape mixed with a scraper which causes the tape to develop microfractures makes it an attractant for dirt, mud and salt. the entire thing gets dingy and disgusting in record time. Assuming of course that the edges of the tape even hold up against the scraper. I could maybe tape it to the bumper or something. But windows that get scrapped don't make a good location. I am not keen about taping decals to other areas of car in general. They can be difficult to remove. As it is, magnets can get pretty disgusting over time.
When you live in harsh climate conditions, you depend on the outside of the vehicle to protect against the elements, and anything that should be protected needs to be on the inside.
The best solution might be a light tape against the inside of the window.