I've never got very good action shots from my TZ7 in anything but good light conditions, then again I'm not a very good photographer so it might just be that. I do find it a bit bulky for riding use, I often think I've bought the wrong camera, I really miss the pocketability of my Ixus. Oh, and the ****ing rotating top dial control that moves to a new random selection every time you put it in a case or pocket. And I have to say it doesn't feel at all durable, my old Ixus took such a hellish beating and still worked perfectly, I don't think the Lumix will survive a 10th of that.
But the range is huge, the video footage is great, all in all it's a pretty fantastic bit of kit- it forgets it's a compact camera, sometimes it thinks it's a bridge camera, sometimes it thinks it's a home video camera.