It's well known that keeping cryptocurrency on an exchange is dangerous insofar as it they could be hacked and your crypto stolen. I'd argue that keeping fiat on the exchange is somewhat less risky, since hackers don't steal fiat, however a bankruptcy would certainly see your fiat disappear. Indeed, even when they are hacked for crypto it seems that might be spread the losses over all customers equally.
With that in mind, has anyone got any ideas/tricks to quickly fund an account with fiat? For example, is Swift faster than SEPA? Does anyone accept funding via Revolut or some other new fintech app? Are there any debit/credit card options that can do big size and don't rip you off on fees?