If I'm not mistaken, the two chambered oiler was brought up in another thread and it was pointed out that cutting it in half and using in leu of the actual pull through container would not work as these are smaller diameter and therefore would not fit the slot in the chest nor hold the brush.
Beg pardon, but the story sounds hokey to me. If the purpose of the pull through container being added to the L42 CES was to hold the lens brush, then it makes little sense that the Britisharmy would have substituted that item with an oiler that would not work for that intended purpose or fit in the appropriate slot. Just sayin'.