As with most companies, it is really about the culture and people you work with. I was selected to the Assurance department and investigating deficiencies associated with fraud and errors for financial service companies.
The nature of the work is mainly focused on client interaction, and some colleagues will have more experience in dealing with a particular clients. Thus, the pleasantness of the job comes from colleagues going out of their way to mentor and advise you when you need it. This helps newcomers adjust as well as connect with their respective mentors, besides getting the job done of course.
Overall, if you are street smart (i.e. not saying things that will spook the client) then you should do fine. Anyone with an IQ higher than room temperature can do the job, but in order to excel, you need to learn fast and apply it effectively.