Evolution open iCal/vCal files quickly
 

For a Plone site I'm working on, events generate an iCal and vCal file. In Mac OS X, one of those files will open iCal.app and add the event to your personal calendar. I am looking for a similar way to do so with Evolution (I'm using Gnome).

I know that you can do File > Import > Forward > Import a single file > Select file... However, such a route is annoying.