as we are waiting for Andrew Kramer to release his new tutorial about 3D tracking for Element, i couldn't wait and decided to do it my way:
With this technique we use the software Boujou to create our camera movement in Adobe After Effects 3D space. We also track 3D references of our real action footage to export them in AE as null objects.
Our live action footage camera movement will be created in After Effects, and then we can tell Element where to place in space to match our live action footage.
I hope you will enjoy this technique, wich is the base of what Element for After Effects offers us.