Shouldn't Giffelt know about Justus and that the dude is bad news? If they don't know even that much, they are worth nothing. So, assuming they do know, one would think it's extremely ill-adviced to spend a lot of time in Harold's company, especially in any civilised places. There's no way Justus wouldn't keep an eye on Harold. In fact there are probably others who do, since it's not like all of the corrupt people would be nothing but zombies serving Justus. The army general, while likely manipulated by Justus, still ought to be his own master and seeking his own fortune, by willingly cooperating with Justus. For the time being, such cooperation would serve Justus more than having only mindless drones doing his bidding. After all, Harold is also willingly cooperating with Justus, despite having the opposite goals. Yes, Harold was blackmailed into it, but he could just hit the road if he wanted to. He'd be a fugitive, but so what? He doesn't do it because it wouldn't suit his goals.