It's not possible to find out what kind of uniform, or vest a player has after the player has died.
This would be useful in scenarios where mission developers want to do things like allow a player to steal an enemy's uniform after killing him.
Another example is for missions that want to read uniform, and vest information when a player dies so that they can persist this information, and allow the player to respawn with the same type of clothing/gear. The only alternative at the moment is to periodically cache the vest, and uniform information until the player dies. {F18249}