Who is buying these things at 800 dollars? At that rate why not go with a 1080 Ti? The Vegas are only amazing at Cryptonight from what I can tell. Almost a cryptonight ASIC as a mining card...
No, it is not just cryptonight...
ETH is a good too 44,5Mh/s
2x 570s would have a higher hash rate for less power and half the price.