I agree and disagree O2 .... I would wholeheartedly recommend CS now that I've had it applied ....and I'm the queen of clean
For anyone in situations where car cleaning isn't always convenient - such as living in a flat, no readily available access to water taps or storage space for products or simply don't have the time for full day details, then CS is definitely the way forward. A heavy shower of rain is sometimes all that's required to clean the car.
CS can still be waxed/sealed on top (I currently have the EXO). It just provides extra protection and physical barrier towards contaminants such as bird lime, tree sap etc etc.
Just because you wouldn't consider it, don't knock it.