Hey guys, I forked the project to use "wget" and a remote web server as a source to sync from. You can take a look at
https://github.com/wernerb/kobo-wget-sync
Tell me what you think, or if anything doesn't work.
I have tested this to work with 2.10.0 firmware on a Kobo Glo, but I don't expect other versions to be a problem.