You know whats funny.
I know I'm not the best dresser, but sometimes I wear clothes, that if described with text,would look really off and yet it seems to look fine when worn together.
Just because the way the armor reads looks off, doesn't mean the armor itself does.
Also, I am getting really tired of the 'doesn't make sense' argument in relation to...well anything.
Your playing a game with magic, elves, half lion half birds, temporary death, people running around with severed limbs and not bleeding to death, humanoids being disemboweled and not dying from it, you can carry more than 20 things based on their size in your inventory while in combat. You need a skill to steal something from someone who is sleeping. Only very talented people have figured out how to kick dirt at someone. No one has figured out a piece of eye-protection to protect from that dirt..ect..ect...
You know what though, your right. That guard wearing a steel breastplate but without anything on his lower-half is to most unrealistic thing and should be addressed.
Please note, I don't think any of those things I listed need addressed. Its a game, not reality, and in this game thats just the way things are.