The stripes on my 05 from the factory were vinyl. They lasted through 2 Wisconsin winters and car washes. Sold the car after that so I can't speak to the durability beyond 2 winters.

 

Thanks! That's the kind of anecdotal data I need lol

 

Oh and the stripes were on the lower part of the door so they really got pounded by both salt spray and the car wash's "Rocker Jets". (Like you I didn't have a choice but to send it through a car wash in the winter.)
Also, the car was only garaged part of the time. Single car garage and 2 cars meant some nights it was outside. I remember one night the temp (not the wind chill) was forecast to get to -25 F. I remember because it was the only time I used the engine block heater.

 

I did vinyl and so far it's holding up well. 3M is top notch. Install wasn't really too difficult. When I was looking into stripes I got a couple estimates and they were all 10times what I spent for vinyl. Plus if I wanna change them out it's no big deal. I already got my money's worth. I've had them on since January of last year and they have gone through two winters in Germany.