Well... That's my question for Agent Smith.
I assume that he plans on using the throat guard in conjunction with another mask. Would he be ok with having it solidly mounted with the little plastic fasteners that the soft ears mount with? Or does he need the throat guard to be floppy like the originals were?
If it's floppy, are zip ties acceptable?
It's tricky... The hardest part of any project is sourcing these little bits and pieces.
Meanwhile, barring a solution, I can easily write the program and cut the foam out in an afternoon.