I'm just creating lead sheets (chords & lyrics), and use Open Office/Libre Office, then export to PDF. Our band MD uses MS-Word and I export his creations to PDF. All the PDFs are stored on a remote server and accessible via a browser. In the case of the band, it's been the most efficient way to distribute lead sheets and updates.
On a personal note, I find a 10" tablet a little small while performing in the band, and could use a larger tablet. This might change when I have my scheduled cataract surgeries.