Can I import everything into Aperture, then keep iPhoto and access the Aperture library just to create calenders and cards?
Yes, exactly. The new unified library format makes it possible to open your Aperture Library in iPhoto.
And you can use the images in the Aperture library to create calendars and cards or send mail using iPhoto stationary.
You can even use iPhoto in parallel to Aperture - view one Aperture library in iPhoto and another one in Aperture, if you want to compare libraries. Bur you will not be able to view the calendars and cards in Aperture. If you want to reveal managed original image files in the Finder, you can do this iPhoto. It is still not possible in Aperture.
Pitfalls to be aware of:
- Unhide all photos you have hidden in iPhoto before importing. You cannot unhide these in Aperture.
- There have been issues with smart albums created in iPhoto. It would be safer to delete the iPhoto created smart albums once you imported your iPhoto library and to recreate them in Aperture.
- The keyword structure in iPhoto is flat, but the Aperture keyword structure can be hierarchical. This may cause duplicate keywords, if you assign and change keywords in iPhoto.
But I found it works really well so far. My iPhoto Libraries date back to the very first iPhoto release, and I have imported and merged quite a few of my older iPhoto libraries into one large Aperture library. It is great to have all images in one single database, and not to have to remember which library to open, when I am looking for a particular picture.
Have you seen these knowledge base articles?