Maybe. It depends on the buff levels provided by the randomly generated gear that you find and what you already invested into your character. Someone already posted that they had lower damage output than with the previous class so they switched back, a situation that I am also experiencing.
I only ended up using Tenebrium on 2-handed weapons. For all the rest, I had better weapons that were non-Tenebrium. There are some unique non-Tenebrium weapons that are still good at the end of the game.