Must Have Been A Beer or 12 Involved

Reddog1 wrote:
... it was common practice to have passengers in the TC while traveling.

I'm thinking about buying a truck camper now, still without significant knowledge of RV-ing. I searched for "passengers" and this is the first thread that almost answers my question.
Is it now illegal to carry passengers in the camper part of a truck camper? It will make a difference in my thinking.
Thankfully I don't own a pickup yet so we are spared the extended can-my-truck-do-this discussion. This thread here was a learning experience but I could use a link to a truck camper beginner's thread.

Edit: Found the FAQ and the thread about threads... wow that's a lot of reading to do. And I only looked at this forum again because I was seduced by some not-quite-spam.