I agree that I have not heard of Renovateur being used in leather production, but that is not the topic of this discussion. For that matter, there is very little public information about just what tanneries use for specific leathers. I assume customers of the tanneries can may be able to get far more detailed information, but it sounds like much of is classified as proprietary.
I consider Nick V an expert on shoe maintenance and repair, so if he says Renovateur (and Venetian) are good for dry leather, then I will take him at his word. Nick Horween has advocated Venetian rather than Renovateur, but I have not seen him quoted as suggesting that Renovateur is dangerous for leather.
For some time Nick Horween has been saying their tannery will start selling a conditioner, once it comes out I certainly will try it.