Marc, I will share some soon I hope.
Here's how mine are both set up - it suits me really well but other people might want other configurations to highlight features they use more. Also, I've never really done a sit-down analysis of the optimal configuration, I've just iterated towards something I find easy.
Control Wheel; ISO
AEL Button; AEL Hold
AF/MF button (how I leave the switch orientated most of the time); AF/MF toggle
Cn 1; Focus Settings
Cn 2; Focus Mode
Cn 3; Steady Shot
Center button; Eye AF
Left Button; Drive Mode
Right Button; Smile/Face Detect
Down Button; Focus area
So what I do is this: I leave the AFMF/AEL switch generally in the UP position.
This means that when I press the button in the centre of it, I switch from AF to MF.
When in AF, pressing C1 lets me use the dial as a cursor to move the focus spot around.
When in MF, pressing C1 lets me magnify the MF area and the dial allows me to move it around.
After a while this gets to be very fast. I will generally use Face Detect with Small Single Spot AF left on centre by default but if face detect struggles, moving the AF spot to the desired face will usually get it to lock on. You can use Face Detect in Zone and Wide, but I much prefer to be in DMF mode with small single spot.
Eye detect is actuated by pressing and releasing the centre button of the main dial when Face Detect is active and the shutter is half pressed. For most shots face detect alone is enough. Face detect also makes quite certain that the AF system won't 'see' something behind the desired subject, a problem that even the small single spot sometimes falls victim to.
I also have the Function Button programmed with a set of useful, often needed items.
I find the setup to be very fast and most importantly, accurate. It takes a bit of practice but I like it! The one thing I would say is that using the battery grip in order to gain a vertical shutter release does compromise the speed at which I can operate the system of flicking the single small AF point around the field quickly. But I'm even getting used to that. Practice makes somewhat competent!