Ben Zimmer's latest On Language column has a note at the end about whether none ought to be viewed as singular or plural. My inner pedant (which, admittedly, is often my entire persona) prefers to think of none as a contraction of not one, so I will say None of us is consistent.
Which is the tip-off, of course. I realized while reading that a familiar phrase would not sound right without the plural form of the following verb: None dare call it treason. Saying None dares call it treason would just sound wrong, even though No one dares sounds fine.
Ah, well. Emerson!, I cry. And now I plan to boldly go about the rest of my day.