This is the kind of thing I think about doing every so often, before realizing it would take me a lot more time, energy, and money than I'm willing to spend to save 10 minutes once a week manually copying my work events from GCal to Etar on my phone and vice versa, and both to the weekly dry erase calendar on my wall.

My recurring events are all blocked off on the calendars already ("private" for personal events on my work calendar), so it really is quite a quick update.