Ah Sibelius. I loved driving through the New England country side in the Spring, in an open convertible listening to his Symphony #2, and NO I do not think anyone in skating today could use it.
I believe a skater or choreographer has to agree: 1. the music is skateable. 2. how to splice it down to the rules of the ISU. 3. question whether the skater has the emotional interpretation (happy, sad, majestic, ethereal, etc.) towards the music. and 4. which we do not know is, if the Judges have a personal distaste for the music.
Once that is decided, is it worth going against the tried and true (Carmen, Tosca, Roti R&J, etc.)? There is risk. much of the CoP is not quantifiable but opinionated. It's not just pretending to be an acrobatic ballerina. There is a sport going on as well.