I have worked closely with Axel over the past 4 years whilst we undertook the challenging task of co-convening the first International Standard on Guidance for Governance of Organisations (ISO37000).
I cannot recommend Axel highly enough due to a rare combination of experience and commitment to the topic of how to achieve the best governing system for an organisation - along with a highly advanced set of analytical skills around the topic. These skills are sharpened by a genuine and humble approach to solving the knotting questions that come with the territory. As such, he is honest when he doesn't fully understand a topic and is willing to adjust his views when presented with better evidence.
Axel's serious yet relaxed style of working makes him a pleasure to be engaged with. He is also one of the most generous people I know - if he is able to help then he will do his very best to, even when this involves sacrifice on his end. In summary, engaging Axel on the topic of governance can't possibly be a mistake. It is more than likely he is already highly competent in the area, and if not, he would be honest in letting you know the limits of his skills, break new ground if needed, or point you in the right direction.