You can also use AdobeRGB with Farbfeld, but from my experience, those photographers shooting and printing in AdobeRGB with late CMYK export have Photoshop/PhotoRAW as their pipeline. If you fuck one thing up trying to handle AdobeRGB in farbfeld, everything is fucked up, but that happens anywhere.

On the other hand, most photographers shoot their stuff in sRGB (for a fact, because sRGB is by far the most widespread). I don't want to insult the professionals or something, I'm just acknowledging the fact that for the 1% using AdobeRGB there's no reason to complicate the format.