This won't prevent too many challenges other than normally armored/shielded PC's will lose an action which means they'll risk an extra hit compared to others. This is not a big deal really and so long as it isn't ambush after ambush by heavily equipped foes, its fine.
As an aside, D&D would benefit from a proper buckler. It was the main personal defense for walking about and in cities for many many centuries. Its like a pan lid kind of and serves as weapon and armor both and is easy to carry hung from the belt.
As an aside, D&D would benefit from a proper buckler. It was the main personal defense for walking about and in cities for many many centuries. Its like a pan lid kind of and serves as weapon and armor both and is easy to carry hung from the belt.