They can only stay cloaked for a few seconds at a time. The air sort of shimmers when the pop in and out. Hurt them badly enough and they can't cloak at all.

[ The interesting think about the digistruct network is that one can keep just about anything in their pocket, as evidenced by Maya, who scrolls through the items in her "backpack" with the push of a few buttons and pulls a sniper rifle out of thin air. Maya has a preference for Maliwan ordinance, it seems, because it's a Maliwan-brand sniper, with glowing blue lights on it. ]

But I don't mind thinning the crowd a little first.