Hello Aussi,
I have always revealed I work for FXCM, and while you're right about the possible conflicts of interest that could exist with dealing desk implementation, this discussion was originally about using an ECN broker to perform a swap trading egy. In fact, I would have recommended FXCM's No Dealing Desk (NDD) Foreign Exchange implementation to the OP (Amenlo) when he wasn't seeking 100:1 leverage or higher on exotic pairs such as USD/TRY and USD/ZAR. For risk management purposes, we've got higher margin requirements (lesser available leverage) for exotics.
That said, on the NDD model which we supply to all typical accounts (2k account opening minimal*), FXCM offsets every customer order one-for-one together with the lowest prices out of http://bit.ly/2bhuUmE. The transaction sizes being discussed in this thread will easily qualify Avibe for a typical account and possibly even an Active Trader account (25k minimal) with FXCM.
Since we don't take the market risk on the other side of customer trades on NDD, we don't profit from customer losses or lose from customer profits (even swap profits). Therefore, FXCM welcomes all trading egies including swap trading egies. The question is whether margin requirements for exotics are too high for the total amount of leverage Avibe needs, which is the reason I asked him just how much equity he would look to use in a true account.
We also offer a Mini account type that uses DD implementation for traders looking to begin with as little as $50.