WEKAF style masks .... The cups that are supposed to protect your ears can actually catch air on a direct hitThat is a great point
and probably the biggest problem with the WEKAF masks. The guys I train with stuff a rag into the ear cup of the mask. This helps some, but I am going to start wearing ear plugs when I fight with the WEKAF gear.
It is easy to be lulled into by "safety equipment" I was sparring a guy with WEKAF gear and hit him on the head so hard (with one of those little 7/8" sticks) that his knees buckled and he almost went down. At the last WEKAF World Cup, people were braking bones with 7/8" rattan sticks.