Has anyone mathed out the Zombie Ward Changes?

When I support I usually run Domination as my off-page with Zombie Ward and Ingenious Hunter. Heretofore that has meant my vision stays out longer, and I can drop wards at a fairly high rate. Obviously, this nerf is going to make ward placement in the early game a lot more painful.

But I ask because prior to this support screw job, I took as soon as I'd achieved my GI Quest completion. That seemed to be an odd pick based on conversations I've had in the past. Given that the duration for basic wards is not enhanced any longer, is this going to be a more common pick?

If anyone has done any math on if ZW is worth it any more, I'd appreciate it.