Backing Up Client Backups In Whs 2011

I'd like to backup the client computer backups in my WHS 2011 to an external drive (pretty much the contents of the "Client Computer Backups" share).

I looked at trying to use WHS BDBB but it looks like it doesn't work with WHS 2011 unless I'm using the wrong version (1.0.3.3). It won't install, giving a "WHS Backup Database-Backup requires Windows Home Server" message.

Does anyone have recommendation on how best to do this backup - manual scripted maybe, or some other utility/add-in?