I am not aware of Second Chance utilizing it in their armor, their website does not mention it. Point Blank Body Armor and PACA Body Armor have had a relationship with ThorShield for many years now, offering this material in their vest.
It is sewn in as part of the cover/carrier and is about half the denier (thickness) of a common t-shirt. It does not add any bulk to the package and is very effective.
There are verifiable instances of cops being disarmed of their taser and deployed against them, one in Tampa (FL) and another in VA. We spec Point Blank Armor with the Thorshield material in our vests.
I have demo'd this material and its effectiveness on literally hundreds of occasions.