Well, I too am partial to the 1911 platform and I'd personally take the Commander over the G37. The 45 GAP is a neat cartridge with some potential but right now, at this point, I see a few more drawbacks to the 45GAP cartridge than to the 45ACP cartridge.
I have nothing against Glocks... they serve their purpose very well. Now, if you were asking between the G36 or a Commander, I might have a bit more pause but the G37 is larger or should be more difficult to conceal than the Commander and a less desirable platform in my opinion. Of course, the G37 will weigh a bit less.