All - after getting the Troll King quest from Brandon and getting Tenebrium, I opted to keep the tenebrium instead of handing it over to Brandon, causing him to run away (at least to the best of my recollection, it was a long time ago.) I'm now getting to the point of where I'm going to need the Tenebrium weapons to be able to kill the void spawns, and only one of my characters has the handling ability from the book in Sacred Stone. Is there any way around this? Seems a little game breaking unless you knew beforehand how grave your choice in this quest was going to be...
Thanks!