No I really liked Nate and Jen too - would rather have seen them in the final 3 than Ron & Christina - if for nothing else than their funny factor cos of their sniping! Plus like you say they were appreciative of their surroundings a lot of the time you could see that particularly in the videos on the CBS website.
I know for sure that I'd be bickering with Callum if I was on TAR. We always fight when we get lost!!