It is incomparably easier and cheaper to make any transfer this way. For anyone who makes daily transfers and manipulates with substantial amounts, this is the only way. No fees, no banks, no limitations, no waiting. But as in many sections of crypto market, volatility is causing a lot of potential loses. There is no transaction fast enough to prevent the influence volatility could have. I have used it couple of times so far, haven't had any downsides so I would definitely like to see this payment option implement the economy more.