From the pics it doesn't appear that his stock STI safety is broken. It seems all stock STI safeties break sooner or later unfortuantely. From the sounds of it, he wanted the larger Ed Brown...much nicer than stock and won't break. I just put similar SVI safeties on my Edge and they are much more comfortable.
Correct, factory parts are in good conditions, I just want to put EB to my second pistol. On first one I have Swenson ambi safety installed.
Unfortunately in my city (I live in Lithuania) there is only one good gunsmith and he is permanently busy
So, seems, EB will go to box with spare parts...