I tried the O+ after-market pad (or similar mentioned above) on the G-2 for about 8 months? However I’ve just recently gone back to the stock gasket.
While that mod did get my eyes a little closer, the gain in FOV it turns out wasn’t enough to counter the discomfort. At least over time. And it seemed to make it harder to get a good, steady, sweet spot. Oh, and the mod tended to press down on my nose such that I was a ‘mouth breather’ while playing - OTW too much light leakage.
Everyone’s noggin is different. The aftermarket O+ soft/squishy face pad was a savior on the O+ however - stock that thing was akin to torture after about 30 minutes for me. It had a good image but that was it.