They will jump you at a spot very close by though. As for the bounty hunters, they're part of the game for any character that has a Karma rating on either extreme. If you're Good you'll have Talon mercenaries after you, if you're Evil it will be the Regulators. Only Neutral characters are exempt from being ambushed. You'll come across them every so often for the rest of the game. And there is no time trigger, it's all based on your Karma. As soon as you stop being Neutral one or the other will start showing up and making your life miserable.
I for one appreciate the Talon Company ambushes lol. They provide good gear early on, give decent experience per kill, and I just like killing them lol.
One fun thing to do is if you figure out where they spawn you can lay mines there and blow them up when they appear. :nuke: