This evidence is solid though, the other one was a banner, this one is an actual cape in-game. Also, it wouldn't be a bad idea to finally trim the quest cape I would much rather have it trimmed by the diarys and not music. that way it would be pretty close to trimming by the time you manage to get quest cape. Maybe the cape would include music/diaries/mini quests? Well seeing as it's two colored trim that sounds like it would work, although the colors don't really match the achievement diary thing. :?