I've been trying to get to this all day, the site was crippled from getting so many hits. From the video the suit does look to be pretty light weight and agile.
http://iesb.net/index.php?option=com_content&task=view&id=2435&Itemid=99
Ooh, that's pretty neat. Too bad he wasn't running around or anything. Those IESB folks need to learn how to do some video editing, though.