I am SO impressed by this update that I can't express my gratitude to the developer. He has heard every nasty complaint and addressed each one with a flexible, totally functional add-on that not only made me feel glad to have donated, but is sending me back to RE-donating! Thank you for all of this work!
PRECEDING REVIEW (which was called "almost there"):
As of this new version, I can move the icon to the Add-on bar, but this requires installing the extension "New Add-on Bar" -- which I hope will continue to work in future versions of Firefox.
The only issue is that it is only available as a pop-up, not as a strip of multiple days. That strip was really useful.
BTW, I contributed to this developer, and he is responsive -- so I encourage others to do so as well.