Zpaq for file backup

It would be great if it was possible to integrate zpaq to replace or augment current method of file backup? It is an incremental, journaling archiver with deduplication, encryption and very high compression ratio that is developed open source under MIT license. It stores data in one append-only file (optionally divided to parts) so UrBackup wouldn’t need to recreate the whole directory structure of backup source on every incremental backup.