Trading BitShares for fiat is great.  You get better pricing than at the exchanges if you are patient (because shorts are forced to cover every 30 days in order to provide liquidity), but you have to be much more patient when trading Bitcoin for fiat compared to MtGox liquidity.  It is more like Coinbase right now (the spreads are high so day-trading is difficult)(more like week-trading currently).

Right now it is great for the mid to long term investor, but BitShares vs fiat is day-tradable if you only make one to two trades a day.

The biggest problem currently is that the price of BitShares has been stable for 2 months, so the volatility is almost zero.

Basically we are trading around shorts who are forced to cover every 30 days while we wait for more pissed off GoxStamped traders to migrate.  I love trading, but I hate hearing about Gox/BitStamp heists every month (those are the worst trades).

So given the current options, I'll risk low volume/volatility over worrying about getting Goxed