A guy told me today that his son has dual US/Swiss citizenship and that he always travels on his Swiss passport because it is much easier to travel on the Swiss passport. Why would this be?
Ideally, I am hoping for someone who actually has a Swiss passport and can speak authoritatively about how they are treated. Getting guesses from people who do not have Swiss passports is not useful. I can guess.
A partial answer is that even though the US and Switzerland have similar visa rights around the world, in those countries where both require a visa, US passport are possibly scrutinized/searched/hassled more than Switzerland.
(I don't consider the linked question to answer my question. That question/answer does absolutely nothing to answer why a Swiss passport would be more convenient than a US passport.)