Personally I wouldn't use continuous focus....
Have you tried it on your e-p1? As far as I can tell, it wouldn't ever do anything useful, it just sits there continuously re-focusing / bouncing the lens back and forth, roughly 2 times a second, even when focusing on a stationary object. The result is it's never in focus...
I can't imagine what they were thinking with that feature, if it were a fast moving object like a car, the focus wouldn't be fast enough to catch it focused, if it were anything slower, you would have focused and snapped the photo already...