The enclosed helmet being worn offers more protection than the Roman legionary helmet used for comparison. Alex Clarke has worn both styles and finds that the Roman helmet allows better hearing. On that personal experience, he would choose the Roman design for skirmishing and the more protective helmet for a pitched battle. The comparison shows how enclosure can affect awareness as well as protection.
Notable Point · 2:26:31-2:28:01
Helmet design trades protection against battlefield awareness
A comparison based on wearing both helmet styles weighs greater enclosure against better hearing during skirmishing.