Only the guy on the right looks even slightly like a Marine-murdering Ogryn Servitor, the others look a little too slow and lumbering to have any chance of catching a Space Marine.
They're supposed to be charging, Charging!
Also, the giant scissors don't look as good as the spinny-murderfists. Pretty much everything else from upcoming Heresy Weekender though looks amazing. Bring on the Solar Auxillia Command squads.