Hey guys, I have a G2 and am looking to at the Oly 45mm f1.8. Two questions: Are there any upcoming Panny lenses (with OIS) that will compete with this lens? Is IS even useful in a lens this fast? Is there any mounting issue with the larger diameter lens flange clearing the SLR hump on the G2? Hard to tell whether the flange is larger or the lens barrel is just smaller. Thanks!