I use it exactly this way. Developed this independently. Our projects are usually about 20 days long and then we are on to something else. I use this naming convention for my folders: "YYYYMMDD Where We Went What We Did" and then have sub folders that are named consistently so I know that "05 Financials" will always have expense spread sheets in it and "08 Photos" will always have photos of that trip in it. By using this naming convention, folders normally sort earliest to latest but inverting that is only one click away. Searching the entire account is instantaneous so things do not get lost. I use Paper and Showcase to make nice presentable representations of each project.
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