Outside of monasteries, do any churches which use the Greek typicon (GOA, Antiochian, etc.) , on the eves of the Great Feasts or Sundays, ever have the entire vigil (both Vespers and Matins combined)? Is this practice to be found more in the churches that follow the Slavic typicon? Are vigils simply not done at the parish level because of the time? Really curious to know.
Not that I've seen. Most Churches I've been to (GOA) do Matins immediately before the Divine Liturgy, not combined with the Vespers the night before. The rare parish that actually will do the occasional vigil does the whole thing (all-night, including Compline w/ Akathist, Paraklesis, etc.), not just Vespers + Matins.