It's not perfect (I would like to have the button to open directly where are my workspaces, and I hate the fact it opens all the tabs when I click on a session name to see which tabs are inside it, it should ask me if I want to switch workspaces or open one). But apart these defects, it's very useful to work on several things. One group of tabs for one task. Please improve the problems related to switching workspaces and open them (so it makes disappear your current tabs) by accident.