Hehe. It could indeed be a bit unsettling to have a talking sword. Just ask Lord Earnur Etceteron.
Then again, I'm sure that Gurthang behaved itself as long as it was kept sharp and well-oiled and frequently fed with nassty Orcsses blood. And it would provide some company on long nights by the fire out in the wilderness. I wonder if it was a good conversationalist. Perhaps it had a sharp tongue and a rapier wit.