I've had a good look through the demo and tried it all out, it looks excellent. I've thought for some time that this is what joomla has been sorely missing if it wants to appeal to larger corporations and be more of an alternative to commercial CMS systems. And now with this it finally has it.
I looked through it thinking about what i felt it should do and after looking at the plugin found that it did everything i think it should!
The next corporate site i do is going to be getting this bought for it.
Top marks from me!