A big misconception I've noticed is that people think ASICs are just for Bitcoin, while the reality is that ASICs are Application Specific Integrated Circuits. While the current ASIC systems being used for Bitcoin mining serve no other purpose, the general concept of an ASIC miner existing for Litecoin mining, or anything really isn't a farfetched idea - you just need new hardware that handles the Litecoin mining and will be single purpose just like the Bitcoin ASICs are.
What company is doing the advertising? Are they subject to FCC regulation? Seriously though, there being no ASIC hardware for ltc mining yet means it's "ASIC-proof" in the same way that it not raining in New York today means that New York is "rain-proof". There's been no drive to build and (more importantly) sell ltc mining ASIC hardware.
No, Litecoin chose scrypt specifically because they thought it would not run any faster on GPUs or ASICs and thus it would be pointless to ever develop those ASICs. It looks like they may have been wrong twice.
