Just like to say I've just recieved my "christylus" and it's excellent.
Very slightly flexible - unlike the "official" ones, which I think is where a lot of breakages occur . The standard metal job is fine if you are good, and extract straight every time, but I know quite a few have broken through being yanked out at an angle - because of the slight "give" I doubt this will do that.
Fits perfectly, and works well on all the jobs it has to do.
Lighter than the original, which you soon get accustomed to, and I really can't see it wearing out !
Absolutely brilliant Chris, hope you get a lot of interest - I shall definitely recommend it over here.