We have been involved in both groups mentioned, but the Keepers of the Faith group has been just the girls’ one–Keepers at Home. My son has attended Royal Rangers for about 3 years, and it has been great for him. I enrolled him because he has had a really hard time making friends (as opposed to casual acquaintances) due to those difficult social skills he has trouble mastering as a child with autism. While I can’t say that he has formed any lasting relationships, it has been a good experience for him, largely due to the commitment and understanding of the commanders.
If you can spend some time (maybe go out for coffee or something?) getting to know the commanders of your local group a bit, you would be able to judge if it might be a good fit for your son. It has provided a good mix of Christian teaching, character building, learning new skills, and plain old “guy stuff” for boys.