That is a known issue, which is being looked into, but has been difficult to reliably reproduce.
There is only one copy of the DLC for the duo pack / collector's edition. If you are playing co-op both people have access the DLC items, but there is only one instance of each item in the game (they are unique).
Oh, i see. But if i (who haven't collector's edition) wear pants or take grail - i'll respawn/load witout any equip.
Just in case, with who i can write for some gamenews for partnership? Becose i try too up topic in RU communiti for D:OS, and try interests everybody for game.