well...
I dont think most use them for approaches...
Most print out all the plates they need before the flight and have the EFB in case of an unplanned diversion, emergency, etc...in lieu of carrying and revising 20 Jepp books.
Its really a backup. No big deal if you had to, it has a good display...and really....with a decent FMS - the plate itself is not AS critical as one may think...it does not need to be in your face, just for a briefing and a reference..
We also keep Jeppview on laptops onboard at a workstation in back. If we ever had an unplanned stop requested, we could go back and print them out quick.
I have never had to use it.
hope that helps