I was happy when I found these because I thought having the plunger and cleaning brush housed together was a good idea.  When they arrived I was disappointed.  The canister is not sturdy at all...cheaply made, thin plastic casing.  Additionally, the plunger and brush are smaller than standard.  As an aside, I have changed my mind about wanting the plunger and brush housed together.  It seems a bit unsanitary to me now to have them hanging side by side with little to separate them.

Pros: some level of convenience
Cons: not well made..."cheaply made", brushe and plunger are about 1/2 the size of a standard ones