Out of curiousity, why is the Enterprise stuff not an option for Fermilab?
Based on their stats, (http://www-oss.fnal.gov/projects/fermilinux/common/stats/index.html)
it looks like they would end up with a pretty hefty bill with 2435 installs out there. I'm guessing that isn't counting the compute cluster stations too, but I could be wrong.
Peace.
john