Once you've run 1 abnormal/emergency QRH successfully during training you've run them all. Same goes for FMS work. Look at the requirements for any check ride or even a type ride. It is all maneuvers and command skills. Not PNF stuff. You get signed off on your PC/type rides/initials by being graded as PF. On the check ride though your instructor will probably have you do something like program a hold or intercept a radial, and go over the QH in the oral/prebrief. It might be more work being the non fly, but they don't have to make decisions, they just sit there and do as told. The whole point of the check ride is mastery of the aircraft and CRM/judgement, something the PNF doesn't really have to deal with. Learning the PM stuff takes maybe 10% of the program. The rest as said before is all profiles callouts and maneuvers.