Yes.....Brass bridge-pins are a great idea ; I have been a fan for several years now,and I use them on my Martin,Avalon and Guild guitars.The improvement in volume and tone is noticable,and several friends have taken up the practice; Dave Fenner (Reading) and Bob Templeman (Chesham) are now "converts" as was the late,great,Dave Bennet,who always had them on HIS Avalon.
             Can't say that I am overly impressed with the plastic thingy,though; looks like some kind of surgical appliance !