Cardboard as treatment

Interesting concept using cardboard as the interior. Would this work in a control room? Anybody ever done this? Take a look http://www.inhabitat.com/2008/05/01/yes ... more-10197

One link. [url=http://en.wikipedia.org/wiki/The_Station_nightclub_fire] The Station nightclub fire. Andre[/url]

there are some interesting wall treatment panels which are cardboard and flame retardant which might not do to much acoustically but look neat.