I know I can go to the View Menu (or use the keyboard shortcut) for CoverFlow in DTPO2, but is there a way to put an icon on the Toolbar to turn Cover Flow on and off?
No, there’s no such icon.
Thanks - I’d vote for adding this to a future version. Just like in FInder, I switch frequently between Cover Flow and List view, so it’s nice to have an icon for that, as you do for other Views (Icons, List, Columns, etc.).