I live in Griffeen Glen and used to laugh at people who complained about the commute... not any more.
I go to Baggot Street, and it generally now takes 1:15 to get into work. As the previous poster says, it all depends on how long it takes to get to Woodies - recently it's taken me up to 45 mins, and I would walk but I'd be afraid that the bus would be full by that point.
The Mortons bus and the 25X don't seem to take any difference in time. Maybe the Mortons would trim 5 mins off, but that's all.
The new QBC might make a difference, but I'm not sure whether and how the routes will change to accommodate this. Also, Adamstown will have a major effect, as the people commuting from there will be boarding the buses at the top of the route... will this impact on the availability of buses to people closer to the Lucan Road? Are Dublin Bus planning on increasing the frequency of their buses?