Sorry, but I don't know the answer to this one. I've never tried a grommet swap on the POG 2. However, if you check the skips and the pattern and they are both the same, then it should be a close fit. It will also likely be the closest fitting grommet if you cannot source originals. Even if you have to cut the grommet to fit perfectly, it should still function just fine (perhaps a little more care required during stringing is all).
Hope that helps,