Little by little, my hand, arm, shoulder and probably also my gray matter have got used to the new mouse for a few hours, the vertical mouse was great in the hand while the "normal" compared more uncomfortable (and laptop computer was run mostly parallel, the two mice are adjacent at the desk at home ("normal" ---> laptop, vertical ---> computer), I therefore direct comparison.
For the office, I will also bring a vertical me and my brothers I Stammtisch they even recommended.