Good component, I’m using the Vaadin 10 version with Vaadin 13 framework.
Right now in the main layout I’m only using the top menu and hiding the left menu with getLeftMenu().setVisible(false);
For pages which are to have the left menu I subclass the main layout, make left menu visible and populate it. It gives the benefit that I can have pages with different left menu if needed.
I need to play around with the css to get the look I want and the top menu gets aligned to the right while I want it on the left but shouldn’t be too difficult to solve.