My wife and I enjoyed the tour. For us, the guide is always the key element of a tour. Our guide Angelo was very good. He gave a good overview of the articles with good insight but without boring the group. He answered the questions and also asked questions to see if everybody was involved in what is being explained.
Our guide was good , patient and informative. The group was divided into two as English and German speakers. We being among the English speakers were less in number so that was good. Vienna is a large city and taking a segway tour is a good way of having an overview. I recommend that you make this tour in the beginning part of your stay in Vienna so that you can decide where to go again to get deeper.