Aperture has a pretty nice method where you can save photos in the library or in a separate location. You can also have multiple libraries (which are basically just packages and you can go in and access the jpg and raw files as well)
I'm kinda bummed, I have been a pretty happy Aperture user for a while even though I know most people use Lightroom. Not exactly sure what I'm going to do now.
I tried it once and it was pretty horrible, the folder structure on disk didn't stay in sync with the aperture library. Moving or renaming photos or folders in one stop didn't update the other spot, so when you thought you had organized stuff physically, only the aperture library links updated or vice versa.
I'm kinda bummed, I have been a pretty happy Aperture user for a while even though I know most people use Lightroom. Not exactly sure what I'm going to do now.