I for one like the folder structure of the standard type. Year, date, event, what ever.
You can go to preferences and ask aperture or iphoto to open with a double click in photoshop. I have made aperture work in my normal flow, it helps me by letting me import only photo's that I want to work on. I will export them and after a set time will delete the package that all the files are in,,it is extra space for me. If I want to use some of apples other app. with it I import the media I want to use from a folder I have set up out side the app....there are a lot of plus's,,I like aperture and use it for IR photography,,works better then anything I have found,,,but photoshop will always be my baby even though I use a MAC.