Two problems.
1: C-rpg may not really have a set time period, but everything is at least around 1000-1500 CE, Roman would be closer to 0 CE
2: These armors show skin, which the devs have said they won't allow, as it cannot be set to the skin color of the individual character, and so looks very odd on anything but the skin shade it's made with. Additionally it means these armors couldn't be used on female characters without some major modeling work being done.