I've always hated sending out meeting invites from my phone, mostly because I find it much harder to see other people's calendars on my mobile device than on my computer. When I do manage to access whether they're available or not, I often find myself creating an appointment that overlaps another item. For these reasons, I'd usually prefer to wait to be in front of my computer to manage my calendar, but Google might make me change my mind with the improvements it's bringing to Calendar.