Nick, Appreciate your comments. The shutter release problem with the BG-10 is a surprising design blunder. If I do finally order the MZ-S, I'll include the grip for purposes of extendeng the available power.
I don't find the shutter release button in the BG-10 to be misplaced, at least for my hands.
The IR would be nice, but is it true that it only works from the front of the camera? When I read that their was an IR sensor, my hope was that it would be a handy vibration free release to replace the cable switch. Front only?
No, it works both from the front and the back of the camera, but only if you are using the BG-10 grip. I use a cable release, though.

