Disappointment.
Google - lets get our act together here. No landscape view? Seriously? Looking at a week view of the calendar is basically useless as you see about 7 characters of each event title. Add multiple calendars and you have a real mess.
Needs availability tracking for invitees (like Apple calendar has)
Needs resource tracking (booking conference rooms, etc).
Overall a long way to go before an Apple user (and Google fan) would use this.
The app police about Google Calendar: Get Organized, v1.3.6