Regardless of some issues currently bogging-down the offense (clock management, player development, red zone, general play calling), we have to agree on this (Harbaugh has an eye for QBs), after watching the the wild card weekend games. NFL is a QB-driven league, so York should do whatever he needs to, in order to keep Harbaugh happy.
He graded the following QBs lower than Kaep or not highly at all - Locker, Gabbert, Ponder, Dalton, Stanzi.
He made the right choice on Alex vs. Kaep. No way Alex wins against GB last night.
He called Newton's potential - plutonium grade.
He was interested in Mallet (although, there were character issues), but no proof yet on whether his interest is justifiable or not.
He was relatively high on an undrafted QB name Romo.
There maybe other cases that I am not aware of.