Paste wax and Saphir reno/VSC serve very different purposes. Paste wax once or twice per year is certainly appropriate to try and maintain color and clean up scuffs and scars. Reno and VSC are meant to moisturize and clean; also good a couple of times per year depending on how often you wear your shell cordovans.
RTP. . . Your Ravello LWB's are very similar in color to mine. What color paste wax have you used on yours?