I was up in the air at first too. Then I realized that the Noble Orcrist is Dwarf scale, so its rather large. The UC Orcrist is at human scale, so its a bit smaller. Since I'm a human, I want mine to be proper scale as if it were a real world item. Plus all my other LOTR swords are from UC.
It'd be nice if they planned on making the sheath for it as well. I sent them an email inquiring, but never heard back.