good combination
I like to use the Catsan Smartpack, and after some experiments find this is the best covered box to use with these. The bags fit onto the base well, and the door is above the base, so swings freely.
It is easy to lift off the top to scoop out solids, and the cats are happy to use it, with minimal mess.
I don't know if they are concerned about privacy, but I prefer them out of sight!