I just gave the ACS kit for Modo a test run. 
All I have done so far, is adjusting the ACS rig to fit my little green character, and then I've loaded one of the preset anims that comes with the ACS kit.
There is still a lot of work to do in adjusting the weightmaps etc. And the animation isn't really made for short limbed super stocky guy. But I was so overwhelmed seeing my character moving that I had to share it with the world.