And the results are clear that the neither the iPad or we are nimble enough to handle the myriad of functions (JeppFD-Pro, WOM, QRG, etc.) and time critical QRH/electronic checklist non-normal/EPs on one glitchy and battery-limited screen.

We don't, but each pilot has to have quick access to one during certain scenarios like rejects, pilot incapacitation, smoke and fumes, etc. And the cost of printing two QRHs compared to the benefit could not be more insignificant.