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Yes I have thought this and discussed with my wife. I'm a bit ambivalent about it. How do you pick a height? We've got internal doors, a bifold door leading to outside, and a section of exposed beam and brick behind a log burner. I feel like it would be hard to pick a height that wouldn't look bad where it meets one of those mismatched things, unless I actually went lower than them all.
Obvs subjective but it might look better to keep the white down to picture rail height. Also easier to get a clean masked line on the wall than in the corner.