Right. Philokalia or no philokalia, St. Gregory the Great is a prominant Orthodox Saint. Seven deadly sins and "corresponding" substantive virtues have been printed in many Orthodox prayer books over the centuries. One that that is found, however, that may be a difference is that in Orthodox writings, the virtues are always emphasized above the sin. The sin is the absence of the virtue and if you are doing what is good and thinking what is good, there is no need to emphasize "not doing what is bad" but only to identify it so that we might again engage in the practice of the virtues (humility instead of pride, sophrosyne instead of lust, etc.).