The misinformation in this thread is astounding. Where did the first batch of new grease come from. There is but one grease galley once you see clean grease the old has been moved out. There may still be some old, I concur and if the same grease is used it should not present an issue.
With drum brakes Easy Lube spindles are a waste as the drum needs removal to inspect the magnet and linings. Disc brakes benefit from this feature because the pads and spindle seal can be inspected assembled.
Pump or pack = personal preference for disc brakes IMHO.