I can easily imagine certain types calling someone they were 'cosying up to' 'Tone' as opposed to Tony or Anthony without invitation or precedent. Stony doesn't quite work for me, but I could be wrong. Either way, I'm still stuck on 12 across!
Thanks! I'd just got reef, but still hadn't satisfactorily justified it to myself. I was looking up whether they'd been a notable Republican called Creef! 😆