Well you may be right Richard, but if so then I don't think it is possible without some advanced coding and some RunNas Administrator type hacking.

You can hack the Registry on the fly with RunNas that would probably remove them from view or use(adding and removing printers on the fly during logon every time would be an incredible waste of network bandwidth in my opinion), but that would be very advanced hacking of the registry and using RunNas to do it since I don't think GPO would allow On-The-Fly type changes as it might take a reboot (not tested and don't really have time to dig into such an advanced topic myself right now)

Basically in a nutshell though I don't think it is possible with built-in or Microsoft supported tools to do what he wants to do.
Can it be done, yes I'm sure it can be but would take some digging and testing to do it.

This link I posted would block the Printers menu, but would not stop printing as you pointed out Richard, so guess I did sort of miss it there a bit. ;\)