I had UrBackup running for 6 months+. It wasn’t reliably backing things up, configuring it to be accessible via Internet is almost impossible, adding clienta is a hassle and the config isn’t very user friendly.
Furthermore I got the inpression, that it’s backups aren’t reliable; restoring files without UrBackup might be impossible.
That’s why I’m now back at a incremental rsync backup script. It’s reliable, you can just restore things by copying them back via ssh and it uses a lot less space (!!!) than the UrBackup backups.