Phil, I am also interested in any solution. We are a lab on a standalone network and every so often bring in the latest & greatest linux anaconda dist. At the moment a lab server pushes (via rsync) anaconda to machines throughout the lab. These machines are occasionally used in the field, so NFS is not an option. This solution works fine but we’re always open to better ones. Also, we are engineers tasked with lab work and without sysadmin support, so simpler is better. 
Thanks!