So I was able to find only a small and (for me) quite serious drawback.
Ergonomics is sometimes very stressful for me. I myself have neither huge nor tiny hands and would this be described as average and yet the mouse is sometimes more on the joints.
The major drawback for me.
So far, the mouse button on the index finger could be integrated into any software and has so far been pretty useless for me.
Positive ......
It may be a coincidence, but since I use this mouse, my Kill / Death rate has improved in shooters by approximately 0.1 to 0.2.
Furthermore, it has the "Cheater - Call" rate increased by approximately 30% (instead of every third lobby in about every other lobby).
I really have the feeling that I could best bring out of my ability, thanks to the possible settings.