refinishing almost any "collectible" firearm will greatly diminish its value. As will subjecting it to the wear it would receive as a ccw piece. IMO you should reconsider both of those choices. (provided that the pistol in question is actually collectible) I may be mistaken but I believe the pistol you referenced is still I production so I would question how "rare" it isI have a rare, factory SFS in .40. It comes in factory blue. Other versions had a factory black poly finish that is more durable.
If I refinish my blued version to the black poly finish (This is my CCW piece), will that hurt the collectors value of the pistol?