I was skimming through technotes on the Lotus Support site and came across a technote (193337) that I hadn't noticed before, and since it's Thursday I figured I'd share because I haven't seen it anywhere else:
Without posting the whole content of the technote, what it's saying is that this functionality will be in Sametime 7.5. When I deployed Sametime in my current environment, lacking the ability to scan files in transit is the reason why I wasn't allowed to enable the file transfer functionality.
This feature is going to be as big for me as the new pretty UI on the client. Thank you IBM!