Correct,
I mix it up, sometimes I use one of the top bar positions, another time I use menu position (that requires some custom css to place it correct and give some more space around the switcher for a nicer look) or I create a new row with new module positions in template layout.
I can understand for people who create a multi language for the first time it takes some time to figure it out.
I think setting up a multi language site can give some confusion because it's done in Joomla Core/Template and not in SPPB.