So I drank the rest of this tea yesterday (thanks again Cameron!). I had a bit less leaf than I would use normally, so I brewed it for 4 minutes instead of 3, also hoping to bring out some more of the vanilla and creaminess.
Nope, just brought out a stronger toasted (almost burned) note. Still reasonably tasty (and once again a hint of vanilla came out at the very end of the cup). I will say that I will probably get another sample of this from WP someday to give it another shot.