I can't offer actual experience on suboxone with family and longterm effects, just opinion.
Personally, I feel like suboxone is best only as a temporary component while getting intense treatment otherwise. Therapy, meetings, etc, with a plan in place for tapering off.
Another note, drinking would be usually a no no for a RA, so if there is concern about him having a beer it doesn't sound like recovery.
But my opinion is limited as the only suboxone my AB obtained was illegal and definitely not under doctor supervision.