You don't need a lined holster.
Suede lined holsters may even wear the finish worse as grit and dirt get caught in the sueded surface and abrade the finish.
The "best" lining for a leather holster is a smooth surface. Either a holster lined with the same type of leather as used for the outside, or with a surface finished to a smooth finish.
The sueded, pig skin, or "orthopedic elk" linings are soft, tend to hold grit, and make more contact with the finish, which causes more wear.
Truth is, if you want no wear to the finish from a holster, never put the gun in a holster at all. If you put the gun in any holster, its going to wear the finish.