Are you all talking about refilling the sealed front wheel bearings?
Or the bearings that can be easily taken off and repacked, like in the rear
of most water-cooled VWs?
I would think that the excess grease would eventually make it into the
grease cap instead of forcing it's way past the lips of the inner seal. I
think I have read that even that cap should have a little grease put in it.
Maybe I am totally wrong here.
I have seen, or had to repack, some inner and outer wheel bearings that were
only packed with grease at the bearings themselves. NOW that scares since
if the grease gets hot and leaves those bearings = noise and destruction. I
usually find that the outer bearing fails more often than the inner bearing
that has the seal close to it. I rarely find grease that has forced it way
past a seal to contaminate the shoes. 8^o
I think I have replaced all of my wheel bearings back in 1991 and have only
gone about 135K miles on them, but I might have packed my rear wheel
bearings during the rear brake jobs (maybe 2 times during that period).

JMHO and have a happy holiday all!
later,
dave
(One out of many daves)