His approach combined the formal structures of Neoclassicism with a more fluid, expressive energy. Works such as "Venus beweent de dode Adonis" demonstrate his preference for clear outlines and dramatic staging. Cades was a prolific draughtsman who worked across various media, including pen, ink or chalk. His "Twee ontwerpen voor kandelaars" shows how he applied his fine art training to functional objects, maintaining a consistent level of detail across different formats.

Collectors today appreciate the technical precision and historical character of his work. His "Portrait of a Lady with an Elaborate Cartouche" provides a refined look that fits well in modern spaces. These prints offer a window into the Roman art world of the late 1700s. The compositions are stable and direct, making them suitable for those who value the aesthetics of the Papal States and the transition toward Romanticism.