Whenever you melee a target that is parried you will not benefit from blindside damage even when landing the punch in the backside of them. It seems the bonus melee damage from parried targets does not stack with blindside.
EDIT: Sorry it seems the parry gym bot is always facing you even when...
This item would first and foremost make the visual color of your parry golden for the sake of knowing who has the item active. Additionally, your parry window becomes much tighter (About half as much as base). However on successful parry (of another player) it would refresh your bullet/spirit...
I'm reporting this again because I feel that this feature is immensely helpful with getting awareness on how fights are playing out for your teammates. Other mobas have this functionality where you can easily look across the map and see what's happening to your team, Deadlock currently does not...
I just discovered this feature a few days ago and as of the patch today it no longer works. The settings to bind this is still in the games options but as previously stated it is no longer working.