Unless I'm wrong, in which case dras will let me know very soon, every upgrade card that refers to your attack pool is referring to your dice after your initial armament roll. When a card is discussing pre roll it refers to your armament not your attack pool. Therefore by this inference believe Sato based on his wording will be after the initial roll.
I understand that the attack pool per the rulebook is before and after but I can't think of an upgrade card that refers to it in this way. Also I understand that Sato says to remove dice, however I don't think this has any bearing on my definition. Just my ten cents on the topic my two cents are free.