What can you tell me about copper ceilings?

We live in a 1911 hip roofed bungalow with 10''4" ceilings. It has a mud sill foundation, so small cracks in the ceiling are pretty common. We are thinking about doing a ceiling of woven copper flashing (4"-6" widths) with a light patina to get rid of the visual eyesore created by the cracks. I have two questions: 1. Does this sound like a reasonable ceiling treatment? 2. What do you see as the potential pitfalls in this? Thanks, Steve