Would you install ceramic loose ball bearings in your commuter hubs?
Understanding that there are no real performance gains in the commuter range unless you commute 100 miles or more.
I spoke to Boca Bearings and asked them about water, maintenance, grease, and life span in steel or alu races.
Basically they wont rust, grease is optional and it can be any bearing grease, and the bearings will actually outlive the races. Some papers even suggest that the races will wear better with ceramic. I assume this is because the #5 ceramic bearings are smoother, aka rounder, than #25 steel bearings.
My bike is like my car. I put in quality parts so that I don't have to screw around with it and things tend to go sideways less often.
Yes I understand that #25 steel would be just fine and has been for years. However, you still have to grease them and if the are soaked in water as happens here in the PacNW you can develop all kinds of issues later.
Just a thought.