Another thought on getting an S25:
It can be the perfect "Grey Man" backpack in muted colors - Grey Man is, after all, about blending in an urban environment from a defensive / know your surroundings point of view. Perhaps this may help "toughen" the image of the S25 for your family. See this review:
Black Scout Survival: Perfect Gray Man Pack: Tom Bihn Synapse 25
Also ... don't know if the BB Universal Camouflage version is still available?
Hope this Helps