I really think, then, it must depend on which interviewer you get.
I got into the Hold Pool in 2008 and used about 50% non-aviation examples.
I employed the same philosophy this time and wasn't asked to come up with any alternative aviation examples.
They do stop you, ask questions and re-focus you, if necessary, so I have no doubt they would ask you to use a specific genre of example if that's what they wanted.