But uncloaking goggles can be purchased from Newegg.com, ... pretty new, ... might be best to wait for 2nd/3rd generation. ...pretty expensive right now..
The article says so far they've made it invisible to microwaves, not visible light.
Also I guess this wouldn't work for invisible things touching other visible things, like say a flatscreen tv stuck to a wall, in this case you would still see a shadow.