I posted this on DP review but it looks like it is going to fall off the front page with no responses....any one here want to share?
I've had a lot of different cameras and my best set up turned out to be the way I customized my D700 for focus/exposure/shutter release. In this set up I would use the AFL button (one press don't need to hold) on the back to achieve focus and then the shutter button only did exposure and release. Works great especially if you like to focus and recompose. Once you get the hang of it, you can work really fast and accurately.
After about 10 days with the E-P1, I haven't quite figured out a good configuration where I take advantage of or even use this button.
Would you be so kind as to share your focus and exposure routine and how you use this button on your E-P1.