Terry, thanks for the detailed report.
1. It is developed on a Samsung Note 3.
2. It is supposed to stay on the Google Now page, in case you want to read further, but you can press the headset button multiple times to initiate more searches
3. I am planning to add a keyguard feature, which will put a slide to unlock shield over the screen if it detects it was started in the pocket
4. It's a mater of habit: Use the home key to exit out of Google Now instead of the Back key (although the beta version 1.03 attempts to solve this, have you tried it?)
5. Don't worry about the 2 hours refund window, I give unconditional refund to whoever asks, even a week after purchase. Give it enough time to test. Just send me your order number (in your play store response email) to
dyna.l...@gmail.com