Our company works in the games field and most of our products gets printed. We are forced to have the aartist upload a print version in CMYK and a comment version in RGB because when the artists upload a JPEG in the CMYK color space the colors gets all washed out.
This looks like a minor issue, but if you have to do that for thousand of images you can understand why this would be a very valuable implementation for our workflow.
Hopefully this might help other companies that deal with images have a better experience.