A view shows Doha Office Tower (L) and HSBC Bank Tower (R) in Doha April 30,2012. A year after Qatar ordered conventional banks to stop offering Islamic financial services, an expected windfall for its Islamic banks has yet to materialise. Nor is it clear that banks' customers are benefitting from the policy. Picture taken April 30, 2012. To match QATAR-ISLAMIC/BANKS REUTERS/Mohammed Dabbous (QATAR - Tags: BUSINESS)