I got a Mitas E-08 on my old XT 250, and I rode around 15.000km with the rear tyre, and I think the tire would got around 25.000km.
But is a tyre for paved roads, in gravel you cant find good control.

I will try to test the E-09, because we dont have TKC around here, no Kenda, nothing more off road tires...