I think that depends on their tools and how they evaluate data usage. If the reporting states that the accounts are using very little storage because it's using the same measuring stick that the client does them it's invisible. The question comes up during an audit of the system when the disk usage doesn't match the report. Then again, if this is used by few people it may just look like a margin of error.

From the project page:

> sorry @ the guys from google internal forums who are looking at this