I'll just say this one thing and then leave it alone: If the official rules make weird interpretations like the "armor as an adjective" one you just went through, the physical game is going to be...

Interesting...good to know, thanks! :)

As a curious sidenote, what was the reasoning for that? It's always struck me as odd that the penetration wasn't just universal.

Well, I imagine that the *intended* effect of both abilities was actually:

"Deal 2 damage to target ally. This damage may not be prevented."

Unfortunately what they *actually* wrote was:
...

If they both say "ally or armor abilities" then Reinforced Armor should clearly work on them. It's a bug for either one to bypass an attachment ability, because it is neither an armor nor an ally....