I was at a Moblin seminar just yesterday and the Intel people were very keen to point out that Moblin is NOT the user interface, but rather the stack of components underneath it. "Moblin Compliance" was the key, meaning that any distribution that provides the components specified by the Moblin Core definition can be considered to be Moblin.
The user interface is just a toy, an "experiment" in their words. Given that it uses just the Moblin Core components, it will run on any Moblin compliant system and is, as such, an interesting demo application. That said, the UI should not be confused with Moblin as the system could still be Moblin even if it ran, say, Gnome.
That's what I took away from the seminar, in any case. If any Moblin folks see it differently, feel free to correct me... and your colleagues, too, in that case!