It does exactly what I wanted, but working with it is so cumbersome. It requires too many clicks for simple operations, like opening a tab in a specific container, or switching containers. I think having windows that will open by default the selected container would speed up my workflow. It should also come up on more contextual menus, and definitely showing your options directly, and not as a submenu. It works flawless and it allowed me to ditch Chrome, which is what I wanted, but the UX is not as good. I am looking forward to seeing this extensions as part of the stock browser having a much better integration.