Seems that you can also use the old Xbox controller to port over with PSGroove. Although, it sounds silly but it still possible and a lot more cheaper if you have one already. Maybe you can play around with it, set up the dev environment and compiled it or wait with the dev boards. But, the idea of using Xbox thing to PSGrooved PS3 console is really sounds exciting!
Yes, it is to good to be true and after PSJailbreakCanada.com has being shut down by the U.S. Law Enforcement, it seems to be not possible. But, let's get this