Islamic finance and its foot prints in India

[Link] It is nicely and briefly written piece. The piece favors rather argues for the separate legislation to promote the Islamic finance, the form of finance recognized under the principles of Sharia law. As we are enjoying the well regulated services from the financial system, do we really need a separate stream of finance. Can we really tap additional funds which we couldn't through current system, through Islamic financial system? Does it really worth to embark on additional system as it expected to cause further regulatory confusion?  Doesn't it further deepen and broaden the religious differences?

My main question is that does our formal (current) system really has gaps? Is it really leaving behind any potential resources (funds)?        Probably i need to further probe the issue!!