HAhah... I'm a big fan of the BitShares DEX and have blogged about it before. :)

Unfortunately, the volume simply isn't there yet. It's a chicken/egg problem, for sure, but for quick trades when the market is doing crazy stuff, it's hard to beat the big exchanges. That said, I completely missed the opportunity here, so even with the low volume and slippage, I might have done better on the DEX.