Personally I do not use them because of the adjustment feature. I went to them, because the small diameter piece (that goes through the hanger's hole) of the adjuster is way longer than that of a two stage ferrule. I noticed that with the two stage ferrule, when carrying my bike outside, I sometimes lifted the cable out the hanger when grabbing the stem. Not a problem when carrying a bike outside, but when it happens riding the bike it could be pretty fatal.
My old Guerciotti with a two stage ferrule
Btw Pistol13, please show us some more pics of your -what I think is an- awesome bike.