Hermione had expressed some doubts about it but then Hermione never had been one to follow the fashions very closely . ( And , Harry knew very well , that Hermione disliked bracelets because she said they got in her way when she was working . )
Question: What may happen if Hermoine had on a bracelet while working ?
The answer to the above question:


Hermione may have her bracelet slip onto her wand and mess up a spell .