I would really like to be able to use this cool package with software that can only use v4l1 devices (specifically, the current released VLC), but I'm not sure what I would need to do here.

I notice that the original project provides "flashcamwrap" to use with other software. Does this implementation require that? If so, could you include it in your .deb? Or can I just use one of the new video devices (v4l1, video1 and video2)?