Here's the MNs running a DEX that natively executes instant BTC/LTC swaps! 
https://www.youtube.com/watch?v=wSNFhFBKmsc
https://www.youtube.com/watch?v=wSNFhFBKmsc
I'd love to see actual trading bots executing orders on the DEX itself. Since we'll have a DEX aggregator combining DEX order books from other DEX's (such as Komodo), liquidity will be of no problem if you want to do some arbitrage. Pretty exciting to see how it plays out
As far I understand... only orders from decentralized exanges can be taped into XSN... this thing can not compete with the liquidity provided by centralized exanges