Do what works best for the installation.
Sometimes there is no space to the outside of where the acoustic axis needs to be positioned, in which case the woofers should be placed on the inside.
The acoustic axis of each loudspeaker and the listening position should form an equilateral triangle.
The acoustic axis is the midpoint of the tweeter and the woofer or tweeter and midrange driver.
You have the option with a rotatable tweeter as the tweeter can be rotated 90-deg in either direction or 180-deg for upside-down loudspeakers (by the way, the only effect of rotating the 180-deg is to have the logo the right way round so it is easier to read – acoustically there is no difference).