FYI on line holsters: Depends on what is used for the lining. When my customers request a lining, I use 2-3 oz. topgrain cowhide, smooth side to the gun. No matter whether you line or not, a correctly, fitting holster will cause some bluing wear at the six or seven points of contact with the gun. A cowhide lining will help some, but won't completely eliminate the wear if the gun is drawn and holstered sufficiently. Don't know what Rick uses for linings. John Bianchi, in his book, "Blue Steel and Gun Leather" states that suede linings pick up dirt and grit. The only reason he used suede is because customers insisted on it. (BTW, I will NOT use suede, no matter what!) Also, be sure that whatever lining is used is veg-tanned, and NOT chrome-tanned leather. Chrome-tanned will cause corrosion!
(Disclaimer: This is NOT a solicitation for orders! Just posted for information based on over four decades of experience.)