[Dylan16807]

AP1 is almost the same as rec.2020? I'm not sure what you mean by 'working space' but if preserving all colors was a primary or even secondary goal I definitely wouldn't cut myself down that far.

[pixel_fcker]

AP1 is essentially Rec.2020, yes.

By working space I mean a space in which a user manipulates the data in some way, e.g. image editing, grading, compositing or rendering.