Seems like a strange thing to want displayed on your armour, but hey, whatever makes the customer happy, right? They look fantastic, regardless. Most people who see them probably won't catch the trilobite right away and think it's just a cool design.
*chuckle* in a way, but paleontology geekery is far from a secret society. If you catch someone "in the know" in the right mood, you're likely to have your ear talked off about all the intricacies of whatever you asked about.