What do you mean by the “grow” effect? Scaling up? This can be done in Motion with either keyframes or a behavior.
There are a lot of similarities between the two apps and a lot of differences. They are complementary applications, and now with Motion 2 you can do “roundtripping” by taking a Motion project into AE and using it like a QT clip with live “edit in external editor” capability.
I demonstrate how in the upcoming DMTS dvd INSIDE MOTION 2 from Magnet Media.
Jim Kanter,
Digital Film Institute
http://www.dfilminst.com