Certain fest weapon harnesses will fit one.
As far as non-fest goes your stuck with greatsword harness and I think one or two other things that will fit it. Not sure if the baldric your talking about is the one thats sold from stores or the one from the last fest. The latter I know will hold it.
Only belt worn items that can hold one are a greatsword sheath and a claymore sheath I believe.
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As good almost kill a man as kill a good book; who kills a man kills a reasonable creature, God's image; but he who destroys a good book, kills reason itself, kills the image of God, as it were in the eye.
-John Milton
