[Arcc]

Actually, they're the perfect defense against the type of attacks they're facing from the Eclipse. I think I saw something about a certain type of modern tank plating designed to deflect anti-armor hits that used a similar principle. If you want to block something extremely dangerous but don't expect your defense to survive a direct hit, you should avoid wearing it directly on your person. That's why shields were invented in the first place- a helmet doesn't do you much good when it's caved in through your skull.

Yes, I do think it's rather goofy and am not terribly fond of the current Nanoha arms race. It's one reason I'm looking forward to Caledfwlch showing its true face.