It may be more dependent on the number of loans that the bank processes and the number of exceptions granted.
The bank should have pricing exceptions built into the loan policy (such as: relationship deposit accounts with 6 month average from $100k-250k .25% reduction, relationship deposit accounts with 6 month average from $50k-100k .125% reduction), etc.
As long as pricing exceptions were consistently applied, I would not consider them as "exceptions". Any exception NOT from the policy, I would document (and if the bank is control conscious, present to the compliance committee on a periodic basis.)
Integrity. With it, nothing else matters. Without it, nothing else matters.