If they sell it to the public, they should provide a PC based API where one can customize it with one's own commands via an application running on one's PC connected to the robot via USB or the like. I love robots, but would not want to spend 4K euros on something I could not customize.
iRobot's Warrior + Metal Storm: http://www.irobot.com/sp.cfm?pageid=150 http://www.metalstorm.com/component/option,com_sm2modulewind...
Or, Foster Miller's Talon Swords projects http://youtube.com/watch?v=EhR8PMllkjY