the guitar hero/band hero games- compatibility issues?

Hey do the official guitar grips work with the clean roms, or is some patch required?
how bout the aftermarket grips?i currently will be using either an ak2i, or ez vi on my ds lite...anyone use those aftermarket grips? are they any good?lot of questions hehe....

ive used the guitar grip from GH: on tour to play GH: on tour - Modern Hits. It worked well, no problems

SDHCWhich flash cart were you using? No patch required right?

ive used it on r4 sdhc, and on acekard 2i, no patch required

SDHCVery nice- now off to grab a used guitar grip!