Yes, I have heard of the warka account. You can buy Dinars at the CBI rate which is around $800 per million with the warka account.
Other people who are concerned with the LOP feel safer having their dinars in a warka account. I do not believe in the LOP myself. All of my Dinar are in the larger notes and I am still buying more larger note dinar.
Warka will be a great way to invest in companies in Iraq once the RV takes place. After the RV takes place I may check into opening a warka account.