EZ lube spindle and bearing repack question

Dexter originally said that the EZ Lube was for axles/hubs that were submerged to be easily purged of contaminated grease. They has since lightened up and say it is a general purpose re-pack feature. I have had and used them for years, and find them to be an easy way to give a grease flush between repack/inspections. Patience and turning the wheel are both important to successful flushing.

I do pull the hubs and have the bearings cleaned, inspected and repacked every other year on average.