Personal stories from pianists
One of the playlists on the PASK YouTube channel contains personal stories from pianists, including excerpts from their first try-out sessions. https://www.youtube.com/playlist?list=PLHBn-VaaOCGcAanKWSo7pCA0GFfQa7N1b
See this video by Canadian pianist Linda Gould telling the story of her DS5.5® keyboard. It also clearly illustrates her problems with the conventional keyboard and why it did not allow her the opportunity to pursue a concert career.
And see the moving video of Tiffany Goff trying Steinbuhler keyboards for the very first time.
Also you can download these personal written stories from many pianists and teachers: https://paskpiano.org/wp-content/uploads/2019/03/PASK-Quotes-and-stories_March-2018.pdf