If you set your string action by ensuring the bottoms of each string are a consistent distance from the frets, doesn’t that mean the tops of the strings are now inconsistent because of the different string diameters? Is this a problem? Do you need to be concerned?
While most guitars have a single radius along the length of the fingerboard, a compound radius instrument has a radius that gradually increases/flattens as you go further up the neck.
Some players find these a godsend but they do require some different methods to set them up and to perform fretwork on them.