Does anyone understand what is meant by this?

Quote Originally Posted by Live Letter
Q11: In regards to retainer sharing, for example, if you have one account with three characters on the same world, will we be sharing 2 retainers between 3 characters or have 6 retainers?

A11: While their inventory will be empty, the retainers will be shared.
Here is how Reinheart translated it in his google doc:

f; okay next question, regarding retainer, say you have 3 characters on same world, would it be 6 retainers or just two?
y; the content of the bag will be empty but it will be shared with same retainer
y; the way you use it won’t change
f; i see

What do they mean the content of the bag will be empty? And I guess the answer to the actual question is you will have 2 retainers to share on one server for all the characters on your account?