The concern of what might come along through that stream - Seoraj suspects he's beginning to get paranoid about every possible bad ending, but on the other hand that seems eminently sensible about now - is one that occurs to him promptly, but weighed against the upsides of having it there, worth taking the risk. Mind, he's not sure anyone else should ever take their word on risk assessment, collectively.

(He flatters himself that he's better at it when he's not following Bruce out of some morbid desire to see what happens next.)

“How far down're we going?” Not tonight, he presumes; they'll camp, it's about that time. But it might be worth getting a more detailed version of the plan, given what's happened already and the version he remembers getting before they left the city--