In the new video from PCGamer there's a few Reapers that attack during the Phase Cannon bit. However, unlike in the first video these guys get right up to the phase cannons and shoot flames, which apparently makes the phase cannons glow orange (a "burning" damage over time thing perhaps?).

So it looks like reapers will have two forms of attack: the pistols and the traditional firebat flamethrowers. How do you think they'll choose which one to use? Will they switch to the fire when they're in melee range or will you have to manually switch between their weapons?