Purported advantages to Bancor on EOS include: one second transactions, no-transaction fees, and no Ethereum gas-fees. If it works, Bancor on EOS could eliminate 10 second transaction times, gas fees, and transaction fees of up to $50 all of which are common on Ethereum.
Bancor on EOS is already working with over a dozen Cryptocurrencies. Altcoins utilizing BancorX and Bancor on EOS include:
Horus Pay (HORUS)
EOS Poker (POKER)