I just read that there are some camcorders that are USB Video Class (UVC) compliant, like JVC GRD-Z7U.
So you guys having Ratoc CF can broad the range of devices to test
Because I am not planning to but a webcam just to test with, each time I go to a computer store I ask for the webcams listed to be UVC, just to give it a try at the same store desk

(I have not found any store with stock yet)