I prefer the Grid option to show all tabs.
However managing tabs quickly is easier when having the Sidebar since it allows to select multiple tabs and place them in a tab group.
So I'd like to be able to open the Siebar when I've opened the tab Grid.
When a user with tab grid wants to move multiple tabs into one tab group they have to either move all tabs one by one.
Or they need to go to the settings, select the sidebar, move the tabs and then revert the option again.