JudasIscariot: Let me rephrase that:
If you already have the base game downloaded, just download the universal update.
hucklebarry: I didn't see your unphrased comment :p I'm mostly thinking of re-installing. One of the advantages of GOG games is the ease of installation. No CD swapping and updating. Rather than archive patches, I'd prefer to keep the most recent full version for when I need to reinstall. Thanks. (I thought GOG was good at keeping those updated, but didn't know if it happened right away).
The unphrased comment was pretty much the same thing but I thought it wouldn't communicate clearly what I wanted to say :P
IIRC, we do upgrade the installers but we also release the patches for those who already have the game downloaded and installed and don't feel like downloading a 3-4 GB installer all over again :D