poker/BJ bankroll

[AUrigamortis]

I am a winning poker player and semi-new to card counting. I play 6 max limit hold 'em. I keep at least 500 big bets in my poker baknroll (about $10K) for the level that I am currently playing. I use the omega II system for card counting and it recommends having at least 150 max. bets in my BJ bankroll. When my poker bankroll gets up to $15K I will be sufficiently bankrolled to play BJ at he $25 minimum bet level (playing 2 deck BJ w/ a 4:1 bet spread). My question is do I need to have two bankrolls (one for poker, one for BJ) exclusive of each other, or can I use one single bankroll for each game and still maintain my current risk of ruin?

i.e. one $15K bankroll for playing 10-20 poker and $25 BJ, or a $15K bankroll for BJ and another $10K bankroll for poker