There's a couple of ways to do it. I, for example, setup ElkBuffBars to show only certain buffs on me very close to the middle of my screen (so I could watch shouts and Spell Reflect - stuff like that). I just added the Sword and Board buff to that.
You could also get a combat text addon like Parrot or Mik's Scrolling Battle Text and make a trigger to show Sword and Board in a custom frame. I like that solution a little better, but I use both

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