I have one - it broke in half. So, i've been using up the top half, then I'll finish off the bottom. I rarely need it. Haven't used the alum block I bought yet - I need to make a good case for it first.
I've still got the styptic pencil I bough more than 2 years ago - it only gets used once in a blue moon, but it's had some heavy use in the past
On the other hand I've been finishing every shave with an Alum Block for over 2 years - not so much to stop weepers, but mainly to seal the microscopic nicks and harden the skin on my face - I wouldn't be without the Alum and my face always feels like a million dollars - but I also appreciate the Styptic on the rare occasions that I need it