To be charitable, I think the actual amount of the bump and spacing is very carefully calibrated to make sure that doesn't happen. Really, it's almost like rep

To be charitable, I think the actual amount of the bump and spacing is very carefully calibrated to make sure that doesn't happen. Really, it's almost like replacing the cage with a subtle bumpy bit in the race. And that seems less-crazy. But without the grease, wouldn't it suffer the same as greaseless caged bearings? Albeit slower wear? Perhaps the wear is reduced enough that you'd be willing to replace them more often in exchange for the lower losses through friction. I dunno; I really think this just needs a (perhaps literal) ton of testing.