Good points, but I really don't think it will be a random swap. Never underestimate MB's desire to control the game. He wouldn't risk a potential tribe split of, say, Lex-Ethan-Clarence-Frank-Lindsey-Silas versus Teresa-Kelly-Kim J.-Kim P.-Tom-Brandon. Which one would win more challenges, you think?

He's very into the psychological and social-dynamic aspects of the game. Therefore, I think it will be a vote process; whether you have to vote 3 members of your own tribe off, or pick three members of the other tribe, I don't know. Either is interesting from a sociological point of view. And if we know MB, he will force them to make an "instant decision" with little or no planning time. Either way...I'd expect that if MB has the tribes pick from their own, he'd make a stipulation that at least one male has to go, and if you pick from the other tribe who you want, you have to include at least one female. I also see a possibility that MB would have Samburu trade food to Boran in exchange for water and/or boiling pots.

I do agree with Ice Ice Catty that we won't see pics of any challenges this week, just regular camp pics in their clothes.
"If you don't stand for something, you'll fall for anything."