No. Not since the last time I was overseas.
As to the question above, I consider the probability of needing it so low that it isn't worth paying for it, storing it etc.
In addition, I'll consider myself luck if I have enough notice to arm myself. I can just see me trying into put on body armor.
Of course, if you are really worried you can always sleep in it. And don't forget the helmet. And the shatter proof glasses.