In my experience it's an improvement once you get used to it but it does take training and practice.
It's important to have a well designed eQRH app (not just a PDF file of the paper checklist loaded on an ipad) as it allows for features that a paper checklist cannot - ours for example has an interactive Caution Warning panel where you click on the Caption you've got and it takes you to the appropriate page. It has links in the processes that take you to associated procedures (Such as lowering the gear using backup systems in the case of a hydraulic problem). It also has a traditional index of procedures if you wish to find them in the normal manner.
So... as long as you've got a well designed app and you put the effort into getting really familiar with how it works (just as you would any other procedure or change) then i think it's a real improvement.
Good luck
OH