Why?
Cashouts in normal online poker rooms are a pain in the ass. 99.99999% of Poker players have less than zero interest playing in a currency which sometimes drops in value more than 40% in a day. However if Bitcoin ever gains more widespread adoption in "traditional" online poker rooms it could be a massive increase in the usage of Bitcoin as a medium of exchange.
To put it into perspective last year (we know this because Full Tilt Poker has been sued by DOJ) FTP had cashflow in the range of $500M a year. FTP was ~33% of the global market. That puts global cashflow for online poker @ ~$1.5 billion per year.
Most of that is done via courrier checks, slows as shit bank transfers, VISA/MC, etc. Poker rooms also rack up huge losses due to fraud If Bitcoin could get even 1% of that it could be the killer app. However no "reg" is going to play in Bitcoins. Don't believe me take a trip to the 2 plus 2 forums and ask. The massive volatility swings make it more gambling than playing poker. You can have a winning day/week/month and have it all wiped away because the price on Mt.Gox drops 10%.
"regs" create the critical mass that brings in fish. If you are an unskilled player when you go to a poker room and 24/7/365 you can get a game at any stakes you want that drives adoption. The thing sucks the most about online poker is moving money..... something Bitcoin just happens to be perfectly suited to solve.
If the "native Bitcoin" services want to gain traction allow conversion of funds into USD or EUR and get all the tiny poker rooms together working on a single network so it has a chance at real traffic. Hire some "regs" to generate action and move this this into something real.