Continuous Ink Systems - any good for a Canon MP600?

I have a Canon MP600, which I know uses chipped cartridges. I print in colour sometimes, but not a huge amount, so I was contemplating getting a black and white laser. But then I found out about these continuous ink systems you can buy. Does anyone have experience of using these? I can see how they'd work on a chipless printer, but surely they'd have problems on a chip-using printer. The various places that sell these do sell them for the MP600, but they seem too good to be true.