I have two of the Oberwerk wooden tripods -- an "older" version one, and the more recent version -- as well as the Oberwerk "5000" head.
Here are my Oberwerk 20x80 Deluxe IIIs and the Oberwerk 5000 head on the older tripod:
As you can see in the second pic, I've also incorporated one of the Oberwerk 1" Risers:
...which allows me to view a bit closer to the zenith.
Here's the 5000 Head on the newer version of the tripod:
Ultimately, how you set up the handles on the 5000 Head is a matter of what works best for you. I tried placing the handle(s) in various configurations, and found this one to be most convenient for me.
For one thing... using both handles seemed unnecessary, and also, too "confining".
I tried having the Altitude locking/release knob on both the right and the left, and ended up preferring it on the right.
And while having a single handle mounted on the right side makes it a tiny bit awkward to manipulate the Altitude locking/release knob and the "Safety Pin" release lever... I found that having it mounted on the left side completely interfered with being able to effectively operate the "Manfrotto Plate" locking/release lever.
I have been using it in this configuration for over a year now, and have had no problems with it whatsoever.