Generally, I don't tell people unless there is a reason as most people don't understand it anyway. I had mixed reactions:
Vet... the prvious vet was not bothered, she accepted it and didn't want to talk me out of it at all, moved town since and present vet reacted with utter silence, no comment at all, so I suppose she didn't approve, but leaves me to it.
Kennel...concern about Fipps' hyper behaviour, not balanced, recommended Pedigree champ to make her as calm as a cucumber (again, have moved town since, so won't see her anymore)
Husband...first against, now being proud that she is fed a proper diet
Doggie friends...anything between 'disgusting' andbeing interested to total acceptance.
Breeder...RAW???

why do you do that
I find it important for me to know the answers to possible negative reactions a vet might have for example, that's why I try to keep informed and BritBarf is great for that.