Update from Juan
Correct, these can be rebuilt whenever the spherical bearing wears out for roughly $100. I haven't had anyone wear these out yet so unfortunately, I don't have an answer as to how long these last compared to OEM since they're such a new product. Feedback has been very positive so far.
Customers running these pillow balls have FDs ranging from 100% street cars, full blown time attack machines, and everything in between including my dual purpose FD. I personally have many street and track miles on them without dust covers (to test longevity) in dry and rainy conditions.
Pictures of the updated pillow balls were just posted on Instagram. Look me up @j_auto or like me on Facebook at www.facebook.com/jauto
More FD products are coming shortly including spherical bearing replacements for all bushings.