Lorin Olivier also has a GL860 with a different USB ID (05e3:f191) in an Asus F5RL laptop. He had some success with my code but the images look to be in a different format when running my software. He’s contributed traffic logs from windows which I’ve put alongside mine in the git repository.
Simon (Sur3) also tried it with his 05e3:0503 device and got a seemingly different image format as well. He also took an image that came back from mine and decoded the Bayer colour space, so I can now get images back in colour!
It’s great to see other people getting involved in these efforts, as I will probably not be able to put much time towards this for a while.