I thought it was a joke when I saw it...
http://www.smkw.com/webapp/eCommerce/product.jsp?Mode=Text&SearchText=giant+swiss+army&SKU=W16999
http://www.smkw.com/webapp/eCommerce/product.jsp?Mode=Text&SearchText=giant+swiss+army&SKU=W16999
Nope, it's real.
It came out 3 or 4 years ago and is geared towards collectors (who must have really big pockets in more ways than one )