I don't think it is worth the chance. This leads me to a general observation - I get more bad bruises from one evening of period fencing against heavy blades than I do in 6 months modern fencing. I don't mind the occasional bruise, but I want to participate in regular practice and come out whole as well. I have some concern over blade entrapment, especially fancy guards specifically designed to catch blades. The stiffness of a broken blade, not the sharper tip, is what makes it dangerous.
Daggers start off as broken epee blades.
The broken wrist stuff is stagecraft and is ok for choreographed fencing, but seems inappropriate in a play situation. At worst, it should be up to the person at risk of being hit by the weapon. I am also concerned about what might happen in a trip or in the event of enthusiastic body contact. In retrospect the chance of a really serious injury was higher than it should have been, and I am glad that I did not also have a dagger in my hand. 3-weapons type masks should be used.