Oh contrair mon frere,depends what brand ball joints you have. I only buy the ones that are greasable. Much the same as there are different Ujoint manufacturers, my new Ujoints are not greasable, supposedly lifetime of the vehicle grease...lol. But BJs on the other hand....gotta be lubeable.
The BJs I put in last year had zerk caps on them, I just had to add the actual fitting.