Is it currently possible to do a complete Mecanim setup via script?

I know that UT has said that they intend to allow that at some point, and I know that at least a portion of it is available via the scripting API, however I don't know if it's possible to do EVERYTHING via script.

I've been poking a little bit at it, and I have so far been able to create an Animator. I see that it requires an AnimatorController and an Avatar as well, and in my code I tried doing a simple "new Avatar()" line and assigning it to the Animator's avatar property, but when I run the code, the inspector doesn't actually show anything assigned to the avatar property. The documentation says that using that property isn't fully supported, so I guess I'm not that surprised. I haven't figured out how to properly instantiate an AnimatorController yet either, so that I can assign that to the Animator.

Just wondering if I'm trying to do something that isn't possible yet, or if I'm just missing something here...