Yeah I dunno what is up with the "E-Voke"?
It could be a Separate product from the "Voke"? It could just be a Branding thing wanting to jump on the "e" in from of a product Name? It could be Sloppy Reporting by the Media? Or parts of All three?
It seems to definitely be a different thing to the Voke. And the "E" thing would suggest that it's electronic.