If the dealer is going to redo the entire car in the other film, I personally wouldn't have a problem.
And some times they have more coverage, cost less, are easier to apply and have less "orange peel" as well. What was described above is common on the 3M film and is one of the reason I have switched from using it as much. 3M vinyl for the other stuff I do used to be the top of the line 10 years ago and now even the generics have passed them by- better life, gloss, ease of use, removal, etc etc etcSome other brands may be better - smoother, thicker - but they dont have the same warranty and don't always have the same coverage.