I am not sure if evading a clearcut prohibition to pay interest by the use of ingenious nontraditional financial instrument is kosher, I mean, religiously correct. If I were God I would hate to see my commandments thus twisted and neutered.

On the risk of provoking a riot, I would like to call your attention that more clever nontraditional instruments are needed. For example, the Prophet (sallallaahu ‘alaihi wa sallam) prohibited meeting caravans on route with the intention of purchasing goods before the sellers know the market price. He also prohibited persuading buyers to cancel their purchases from other vendors, and then sell them one's goods. This is tantamount to saying to someone who is buying an item for ten riyals, “Dont buy from my competitor, I have the same item for seven riyals for you.”