I don’t use CEC so I can’t comment on that, but the TV/EPG works as well as any set top box with PVR support that Iv’e used in the past. I’m using the osmc remote, so no direct number input that I can find, but I’ve only got a handful of local channels anyway.
The EPG content off the air was a little spotty for me, so I set up a zap2it.com account and xmltv yesterday which seems to be working better. [Obsolete] How to populate EPG data with zap2xml - #3 by wbeard52
OTA on Kodi is new for me, so I’m still on the learning curve myself, but just having all my media sources through one device is already a much better TV experience.