I use Reno every single time I polish. As a cleaner. And use Lexol or shoe cream to condition before I put on any polish. Usually if I am lazy enough, Reno alone will dissolve the top layer of wax and let me buff out a new shine.
According to Men's Ex Collonil shoe cream is better in conditioning than Saphir M D'Or Creams. Will give that a try someday.
Interesting, for shell cordovan I use reno about twice a year..., some cream, that's about it