Log: "Working Tree" Toolbar button in Log Windows for more obvious/easier navigation

I very often find myself searching through all the opened SmartGit windows.  Although I understand why it is done this way, to me, this is a major weakness of the whole SmartGit workflow (always hunting for windows).
I only very recently discovered the "Open Working Tree" option in the "Repository" menu which is a nice helper, but it is not obvious to discover and being buried in a menu makes it less optimal for navigating "back". I tried to customize the toolbar on Log windows to add this button, but there does not seem to be a way to do that.