On page 219 it says that only members of a particular home chapter (Blood Angels, Ultramarines, etc.) gain the benefits when a Battle-Brother activates a Chapter specific squad mode power, but in reading the descriptions of those powers, they all say things like "all battle-brothers in support range." So which is the case?
Considering the limited likelihood of multiple squad members being from the same home chapter, doesn't making chapter specific squad abilities only effect chapter brothers render them pretty pointless?