My informant informs me:

>As far as I know, Cyrillic letters are still used numerically in
>Russian Church Slavonic. I just pulled Alypii's Church Slavonic
>Grammar (Jordanville, NY, 1984; first ed. 1964) off my shelf, and
>although the pages are numbered with Arabic numerals, the chapters
>and verses in the sample texts (from the Acts of the Apostles) at
>the back of the book are numbered with Cyrillic letters. Note that
>this is a grammar of modern Russian Church Slavonic, not Old Church
>Slavonic.

--
Michael Everson * * Everson Typography * * http://www.evertype.com