given the faster nature of the entire leverage process, its not likely that this will take on the size and scope of the Equity leveraged business..
there are some firms doing this, however, there no shortage of talent for those seats at those desks, so that going large might not be in the business model...
so far, the Equity model has burned through so many accounts/traders that the risk/rewards has returned enough on the investment that the money backing these efforts remains in the Equity markets...