There are plenty of music pieces using or written for handpans. It's a melodic instrument with notes.Please correct me if I'm wrong but my takeaway is that this isn't really as much of an instrument for the sake of making music as it is an instrument to expand on meditation, therapy, etc similar to singing bowls.
Also, it's Roland... I personally don't think a machine gunning artificial bell sound is my path to enlightenment.
That being said. I applaud roland for trying things like this (they had a taiko, cajon, and marching snare too).