I don't think the issue is if you use your own money or not. If they owe money the debtors don't care if it is your money. That's why I keep as little money as possible in the account and have a normal account ready to transfer in case I need more margin...
Most probably I am scaring you now, sorry for that, but maybe better to look at all eventualities: I have a client who lost 500K his whole superfund money with Sonray and he only got 5K out.
