I think I have a copy of the latest standard on the computer in my office. I'll look tomorrow and post again.
That being said, AIB does use "shall" and "should". The former meaning it has to be that way, the latter meaning "best practice" or "strongly suggested".
That being said, every facility I have worked in has C*#! base where it is needed.. generally in office areas or dedicated wet clean areas.
I can't imagine the reason or the need for C*#! base throughout a facility. It's much harder to adequately clean and costs more.
If your wall/floor junctions are whole, and clean, I hardly see why they should be coved.
Marshall