It's apparently a heavy job to remove the vinyl wall covering, and I seem to remember that the grade of aluminum you will find is not the always the same grade as the exterior. I don't have a reference for that, so it could be just another defective memory on my part.
Painting the vinyl is popular, on the other hand. And you can do a less-than-entire aluminum wall covering. See:
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“Courage is being scared to death, but saddling up anyway.”
...John Wayne...........................