Try shooting in the "Limited 10" class witht the Glock. I shoot in both Limited and Limited 10 with my Norinco 1911A1. Being from Canada, being allowed to use a 10rnd magazine in my gun is a bonus.<g>
I see Limited 10 as an advantage, because I can use my 10rnd magazines; Americans see it as a disadvantage, because they're *limited* to a 10 round magazine. Neat.<g>
So, shoot your Beretta 92FS in the Limited Class with your Hi-Caps, and your Glock in Limited 10 with your 10rnd mags. Alternate, it's fun.
Mike