Yeah that should work for you. I take it you stand up and play. The set up you are discussing sounds like it should work for you. I play in a JAM that requires us to sit for three to four hours at a stretch. I would definitely trust the Velcro to hold it with out the tray.
Flashback seems to have made the greatest amount of progress lately. IMO. The developer has now gotten Flash to work in different browsers. The only thing that I really don't have is the camera. But I never used it anyhow. They say there are some openGL applications that are not working but I don't run any of them. Many people were having problems with the gallery FC at the being just after boot up. But most people have gotten this corrected. BOS was my favorite until Robeet seemed to decide to slow down on his development.
I have tried the Guitartapp app. I could not use it because I don't have access to the internet when I am playing. The ultimate guitar web site does great online. In fact I get a lot of the songs from there and I can get it in the key I want. But unfortunately once we all sit down someone will get the idea to play it in a different key. I will look into esong-book.
Basically, all I want is an application that will read my songs from a file. I have copies of all of my songs in .pdf, .doc. and plain txt. It would be nice if the program could read pdf's but I will settle on plain txt at first. I would like to be able to change keys. The text of the songs should be in bold letters and capable of being sized by touching the screen with two fingers and expanding them. (I don't know the name of this technique)
That is pretty much it. The chord reader app does a good job of reading my music and changing keys but the text is hard to read because it uses plain text that has no attributes. And it is positioned so close to the left hand edge that I always feel like I am missing something over there.
We have twenty five folks at our JAM's on Tuesday night. Eight people now are using an electronic display of some sort. Two net-books, One laptop, three rotten fruit pads, and two G tablets. Oh yeah most of us are over 60. I think we have one youngster who is 45 in the group. I can say that I am the one who has been pushing the others to modernize our set ups. I used to take two trips to the car to get the guitar, music stands, and music books. Now I have it down to one trip.
I agree with your thoughts about more people wanting this. Once I saw the ad in Sears I immediately thought that is what I need. I can understand younger groups that have bands and have a set list of songs to play maybe not wanting this. Eventually you memorize everything. But we have a list of over 400 songs that we play at different times. Beginners are also prime users of this technology. Gig Book for the Rotten Fruit pad is a real nice application. It even plays the song for you so you can learn the melody. My "friends" that have the #@%^$ pad all love it. The problem is most of the Android devices are phones. And each phone manufacturer has a little different twist on what their phone can do better than the others. Rotten Fruit pad company does not have this problem because they control everything. So a developer only has to write one version of the program and it works for everything.