I know this is probably not the answer you are looking for, but here goes:-
When running multiple clients on a SAN I make sure all systems have the same fonts, plugins, templates etc installed. Yes I use Fontbook, seems to work fine.
This is a PITA across multiple systems I know but sometimes the lo-fi approach works. An example of this is we share/load itunes libraries via XML to avoid putting the strain on the machine with the master database.
Peter