Board Thread:General Discussion/@comment-64.237.228.1-20140112203219/@comment-99.114.177.205-20140120234943

It's very powerful, but its enchant charge drains very quickly so it's not super-suitable for sustained use. I generally carry it for the occasional Ancient Dragon encounter, but prefer a lower-strength enchant for regular combat.

If you have Azura's Star/The Black Star, though, you could theoretically keep it topped up enough for regular use.