For those with a Road King Classic having the leather covered hard saddle bags..... Do you waterproof the leather at all? How does the leather hold up after riding through a few rain storms? I have just been using the HD brand leather treatment cream stuff but have not yet been caught in a downpour. It's more of a leather conditioner than a waterproofing treatment. I'm just wondering if I should be using some specific leather waterproofing stuff on them or not. Any input or advice? thanks! bobalu.