It's worth recalling that the PAA was going for 2 attack helicopter types: AH-1Z and T129.
The way I see it, the Z-10ME would likely be the system in lieu of the AH-1Z, especially in the CAS role for anti-armour operations. In that sense, the main priority for the PAA was improving the Z-10ME's sand-filtering, endurance, and self-protection (from reinforced composite plating to electronic defensive aids like ECM).
The T129 was sought for its endurance, high-altitude, and hot-temp resilience, especially after spending a night in areas like Baluchistan and interior Punjab. My sense with the T129 was that it's a responsive and all-region system for rapid deployment and use. The AH-1Z was the follow-up for conventional conflicts.
I can see the T129 returning into the picture as the TEI TS1400 is now undergoing final certification. This will be done in 2026, so an ITAR-free variant of the T129 could be a thing.
In that sense, again, the T129 could be that responsive, all-region system, while the Z-10ME is the enforcer.