I line my holsters with deer or elk. what causes damage to the bluing on a gun is friction. and you are going to get friction on any surface you use
suede after a time becomes burnished the same as veg tan. it all boils down to preference,
I love this common sense comment, ''' wouldn’t the meat side of the leather be considered suede? So if we use no liner, it is effectually suede lined, and running the risk of capturing dirt grit etc.?''