Well, I'm no leather expert by a long shot. The info regarding neatsfoot oil was given to me that does a lot of vintage motorcycle seat and saddlebag restoration. He's done work for the HD museum. He said that neatsfoot will eventually cause the leather to harden and crack. That was the case with a set of 1947 saddlebag I had that were worth big money, even in a crumbling state. I took his word as fact as he had no reason to lie to me. Now, I have no idea if 1947 leather was chrome tanned or vegetable tanned and never asked the question. So, that might be a qualifier he left out.
He recommended Lexol as well, but the original Lexol recommendation came from a native American leather artisan. She said she used a family concoction that she did not sell nor share the recipe. So, for palefaces, she recommended Lexol. I've been using it for years and seems to do the job on my bike leather.