Should have done this a lot sooner, but I've updated the first post to contain more information and a download link for a pre-built image.
@Baoulettes and anyone else that's running this - any interest in helping me fix things up and generally reducing the friction of getting this going? I'd like to get to a point where people download a single tarball with the f0f stuff and the Ubuntu rootfs all pre-built and easy to run, as well as to a point where building all the things from scratch is super easy. And obviously also getting any improvements to hardware support as they are possible
File issues and pull requests on github