It actually reminded me of another turbine-like engine I had seen a while back. They had tested it on chainsaws where the reduced vibration was desirable. I guess hybrid applications are mentioned because its trendy. I'm sure there are tons of other potential applications, just can't chase everything.

Google helped me find it again, the pictures and animations are at the bottom http://quasiturbine.promci.qc.ca/ETheoryQTConcept.htm