Great news for compulsive /inspect-ors from the new patch -- Hortus confirms that in neutral areas and out of combat, players will be able to do a little cross-faction inspecting. No more will you have to wonder what kind of helmet that dirty Human Warrior is wearing around Shattrath -- you'll be able to pull them right up and check out all of their gear.
The sky, as you may have noticed, didn't fall when Inspect changed back in patch 2.3 to let anyone see anyone else's gear and talents, and it won't fall again when this change is introduced (trust me). It is interesting to consider how much the Armory has changed the game, though -- odds are that if you'd suggested that we should be able to check the other faction's gear and talents to a developer at the launch of vanilla WoW, they'd have said that, like limiting cross-faction communication, it wasn't right for the feel of the game they wanted to make.
But now that the Armory is up and showing off everyone's secret gear of shame, there's no reason to hide it any more in the game either.