Even thought that particular rockstar "felt different" all rockstars are really the same. They are all prone to attitude problems, diva complexes, sexual identity crisis, and drug addiction.
I paddled the new rock just last week on a class 3 section "city run" on the salmon and it floats rivers just like any other playboat. It does not hold a line, it spins in cross currents, its edgy, its sloooow, it gets pushed around in big waves, and dose not have the volume to carry much food or gear.
when it comes to playboats running rivers, Its more about the person and less about the boat. It just was not designed to do that.