Deb, your first quote's interesting, because it's not what I imagined.
So 'first person accusatory' is what I/one/you use all the time, informally, as in 'So you go along the road and there's a red light'.
In which case the 'true second person narrative' is... not that different, surely. If a novel is written as 'You went along the road and...' I guess it's just using a slightly more distanced version of 'I', and a slightly more intimate version of he/she? Which isn't really very different.
Or have I just not read enough 2nd person novels? Can't say the little I have read makes me want to, though!
(And yes, Miss Snark's well worth a nose).
Emma