Nothing on the holster, absolutely. The belt on mine get Bick Conditioner. Also my and wifes alligator, lizard, horse hide even my riding chaps and snake belts and boots, hand bags,everything, motorcycle pants and jackets, everything gets bick poured on using my hand or tee shirt left overs after its dry.. Doesnt change color, even a pair of her high heels one snowy night.
All other heavy stuff get Neatsfoot OIL, they have 2 kinds i use that oil for more than 50 years, grandpa told me so.