shared base directory?

[luke at techfreak.org]

Hey all,

I'm wondering if there are 'proven' performance gains to running
multiple instances of COD (or any Q3 engine game) from one base
directory, with config files and custom .pk3 files in several user
directories.

I know you can do this, and that some people feel its easier to
manage. But, Im wondering if there are memory usage improvments in
doing it this way as opposed to loading a complete copy of the game
into each users directory.

thoughts?

Luke