I am actually using a G6. G6 is not in the selection list, and I am lazy to key in the G6, hence I leave it as it is. Nevertheless, as you have noted it is difficult using G6 for fashion shoot. I had many shots but this turn out fairly sharp. The rest of them is either not focus properly or too dark. I am still learning. This is the first time i tried to shoot at a fashion show.
Gary A lovely woman, great pose, but the background is distracting. I think though in your behalf its hard to get real good isolation with the G2 if I remember mine. even at wide open aperture it still have a fairly deep DOF. Just my 2 cents