We use Safetycom at our unmanned strip as it allows two way communications. We don't have a A/G or ATC service.
I believe it has helped as previously all we could do was announce our intentions to the Lakenheath MATZ controllers ands listen out for anyone else doing the same. We couldn't have a 2 way conversation.
I think it was only introduced 2 years ago so may not have made its way into the radio proceedure textbooks.
ZA