4 of us got the shingles shot about 7 years ago. One of us (my brother's wife) still contracted shingles. Her case was not severe.
It's only about 51% effective so I guess we could say we beat the odds.
But we would still do it again.
The vaccine needs to be kept at a proper temperature (cold but not sure of the temp) or it might not be effective.
AND...if you get shingles in your eyes you can go blind.
I bugged my doctor about the proper handling of the vaccine before he gave me the shot so as to hope he gets it right and it was handled correctly.
More info here:
Vaccines: VPD-VAC/Shingles/Shingles (Herpes zoster) Vaccination: What You Need to Know
Bob