I use the third wheel for configuration options like "Wi-Fi", "Crop", "SR' and "Grid".
I find it easier to choose the respective option and then turn the dial compared to using the menu system (including the custom menu which still requires navigation for most options).
Doing so allows me to keep the back LCD turned off most of the time, thus saving battery life.
I wish the top LCD provided feedback about the current configuration choice as non-binary choices that do not provide feedback in the viewfinder require the use of the status screen, which I normally don't use at all. Having said that, I prefer the use of the segment top-LCD Ricoh went for over the use of a matrix LCD which would have made it easier to display feedback about the configuration options.
I'd appreciate if I could use the third wheel for the value range options exposure compensation and ISO, but I find it to be unreasonably stiff for this purpose. I find it too hard/slow to move with just the thumb and find pressing the +/- button or "ISO" button in conjunction with the back dial is easier than using an extra finger on the third wheel.
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