Do we know what the overall Pakistan army attack helicopter requirements are (capabilities and numbers)? And if so, can any of those requirements be met with UCAVs or lighter helicopters or some other strategy?
considering Pakistan already operates the Z-9 for the navy, procuring a small number (perhaps 12) of Z-19 with the radar above the rotors could be a good stop-gap measure to fill a scouting role and not require a completely new logistical chain to maintain, while stealthy UCAVs fill the strike role.
if the MMW radar is an AESA radar, it can also be used to carry out electronic attack missions on enemy forces, frying their electronics, and quickly RTB. In this role it carry loitering munitions to carry out electronic attacks from multiple angles, degrading the enemies ability to fight.
If the price (an overall maintenance cost) is not that much different between the Z-19 and Z-10ME, then the Z-10ME should be acquired but with a MMW radar on top to give it that extra capability