My WPMacApp setup requires some manual changes before it can be used easily for outlining, so that's another reason to prefer John's SS-WP setup.
In my setup, Alt-Tab is used by LiteSwitch, a control panel that lets you use the keyboard to switch among applications. Of course, you can easily turn off LiteSwitch, and that would make it possible to use Option-this or -that for outlining. But John's system doesn't need this change, and has the outlining keyboard fixes already built-in.
--- In firstname.lastname@example.org, "Thomas J. Rostafinski, Ph.D." <TJRostaf@...> wrote:
> John, I alternate between two keyboard layouts that are nearly identical
> except that the "Outlining Keyboard" allows me to use a keystroke to
> toggle the outlining mode that does not require the control key, my
> default keyboard does not have this installed.