From what I have been told, though most Greek parishes (I assume this includes the broader "Greek churches" as opposed to "Slavic churches", not just the Greeks themselves) use a reformed version of the Sabaite Typikon which is mostly abbreviated for practicality: for example, it eliminates the Vigil rank of feasts so that all feasts and Sundays are commemorated with just Vespers and Matins, changes the order of Matins, and (I'm guessing) gets rid of the single orarion for deacons. But I've also learned that this is only true of parishes. Greek monasteries, meanwhile, use the original, predating the mid-19th century reforms. Is this the product of specific rulings by the churches involved, or is it merely custom? Could a monastery decide to use the "Violakis Typicon", or conversely, a parish priest to use the Sabaite (over his congregation's protests)?