Pros
Helps to really understand how the whole process from when the product comes in the door all the way to how it makes its way to the shelf and the register knows who to ring it in and what price. It keeps you constantly busy with multiple tasks involving operational things such as pricing issues, ad corrections and changes, and being in charge of the weekly tag/ad change. Unlike being a cashier you have the ability to move around the store and be in charge of your own time management.
Cons
There is always work to do, more than sometimes can ever possibly be finished by the 2 people (that is how many handle it) and so it's always very busy work. I personally don't find this a con because I love working for long hours and being pushed to the max even if it is tedious little things (I like those to). Some people find it stressful and overwhelming because of the amount of work that will sometimes come through.