Played a battle with my brother today, with his mumak vs my mumak in a fun scenario that will be written up on his blog sometime soon. If you haven't visited his blog yet, it's at this address: http://simbattleboard.blogspot.com.au/
The battle report can be read here:
Here's some pics!
And some of his Harad guys on the top of a pyramid. He did a blue theme and dark skin, and came up really well!