FWIW... I've written a simple AHK script for my needs and configured WIN + A for it. Perhaps someone finds it useful.
It acts as toggle. It checks the mode of the active window and enables/disables "always-o-top".
; Always on Top toggle for active window
; --------------------------------------
#a::
WinGet, ExStyle, ExStyle, A
if (ExStyle & 0x8)
{
WinSet,AlwaysOnTop,off,A
Tooltip,Disabled
}
else
{
WinSet,AlwaysOnTop,on,A
ToolTip,Enabled
}
Sleep,2000
Tooltip
return