Their natural environment would be one they were raised in and be more comfortable in. Compare farmers lifestyles to people who grew up and lived in big cities or instead of farmers indigenous islanders who are 100 percent hostile to outsiders and will kill anyone not related to them.
Pros may be they do not use machines and therefore do not consume any natural resources, their carbon footprint will be zero.
Cons: compared to normal persons they cannot accept other cultures and would be considered to have extremist views based on the fact they kill.
Special consideration would be given as they are not terrorists so they would not be as educated or liable for their actions so they don't get reprimanded. Which is fair...