Apologies for the long delay, never saw the reply here. Not sure if the purple was visible on camera or on playback from the camera. Didn't notice it until post (in Premiere and Resolve). Yes, I'd be willing to try and recreate it while shooting in...
Here's a frame from a shoot I just did as well. See the stripe across the talent's chest. Shot in CLog3, Cine Gamut, 1080p 10 bit 4:2:2. Latest firmware.