Question: Assassin Post-Nerf

I don't have access to the game so i can't test it out myself

so...
1. can an assassin or sniper die to a face grapple if they use only silver armor? if not, will adding a lunge finish it?
2. what can a backgrapple one-hit kill provided the target has gold armor (i know for sure snipers and assassins, more concerned about assaults and supports)

thx

1. Yes
2. Same as before

thank you