OP:
It sounds like your camp is filled with respectable people.
If the main issue with marijuana in camp has been it's legal status, this impending change in law should make it just as acceptable as any other after hunt luxuries.
It sounds like the fella in question is willing to respect the wishes of the group and be resposible for himself. Everyone has their own opinion on marijuana (as made painfully odvious in this thread). As long as it's discussed with the group, I'm sure that there will be no problems.
It will sure be an interesting change to see, come legalisation. There will be the few that take things too far, we'll see them in the headlines, but I'm sure that we'll all be okay.
To me it's simple: marijuana, like alcohol, isn't consumed until the hunt is over and guns are away. It's no change from how things are before legalisation.
Boy, this thread has been a hell of a ride...