You need to spend some time at kitchenknifeforums.com...
And it seems like the majority of pro cooks now use japanese/ japanese-style knives that require sharpening on whetstones.
In July there will be a kitchen-knife-related gathering in the DC area that will bring in people from the mid-Atlantic area and beyond; it will include a couple natural stone gurus who help people tweak their sharpening and polishing techniques.
Whetstone sharpening has become a 'thing' again over the last decade, and keeps growing.
On the same forum there are some god threads on seasoning and maintaining CI cookware. If you can maintain a few dozen carbon knives you can probably maintain CI and carbon steel cookware.