Market for Anamorphic, if so, how?

I've always had a curiosity about it, and seeing that the GH5 has a mode to take advantage 2x of extra height (to unsqueeze to width), I wonder if there's a real market for video shot with anamorphic lenses or adapters.

And if so, how would it be presented here on P5? Squeezed or unsqueezed?

Thanks for any info/discussion/comments.