In series of interviews conducted in 2008 and 2010 with Pakistani banking professionals (conventional and Islamic bankers, Shariah banking advisors, finance-using businessmen, and management consultants), economist Feisal Khan noted many Islamic bankers expressed "cynicism" over the difference or lack thereof between conventional and Islamic bank products, the lack of requirements for external Shariah-compliance audits of Islamic banks in Pakistan, shariah boards lack of awareness of their banks' failure to follow shariah compliant practices in or their power to stop these practices. However this did not deter patronage of the banks by the pious (one of whom explained that if his Islamic bank was not truly shariah compliant, 'The sin is on their head now, not on mine! What I could do, I've done.')