There are many ways you can save space:
• You can HIDE the Win TB in the settings. This places SD at the bottom of the screen just LIKE the Win TB, and not on TOP of the Win TB
• You can resize the SD icons making it no bigger than the existing TB.
• You can change the SD style to a slightly shorter one. (some have taller backgrounds)
Of course, you can also have the SD set up so it only appears when you move your mouse to the bottom of the screen (or wherever you have placed your dock).