I tip in moderation, and only when I know the floor will see it. If I have a bad experience with a dealer, that will stop my tipping for a few sessions. I'd guess most folks tip significantly more than they think.
Trip bankroll and total bankroll are different. I generally bring about 10% of my total bankroll per trip. My total roll is 120 max bets, I'll bring 12-15 max bets to the casino