Portable goodies website pocketnow.com has a review of "Hidden Cargo Pants" by a company called SCOTTeVEST.

The concept is simple enough. Geeks like to carry a lot of electronic gizmos around, and often need the extra carrying capacity afforded by cargo pants. However, cargo pants are almost always considered casual attire, which makes it difficult for a geek to be both dapper and properly equipped. SCOTTeVEST has designed cargo pants that appear to be regular khakis, but thanks to the 19th century miracle technology known as "Magnetism," secretly hide away significant storage space. They also are "Personal Area Network Ready." This means that there are holes in the pockets that you can run wires through. That's not a bug, it's a feature.

At about $100 bucks a pop, these cargoes are a bit on the expensive side, but, hey they're also coated with space-age Teflon, which means that they may well be the only pair of pants you'll ever need.

Or something.