Excuse me - I did write a lot here, but had forgotten to make the primary point: I don't think that the availability of productivity tools on mobile is that crucial for someone using them professionally.

Besides, if you are a true power-user of these tools and had been years before - there's quite a high probability that the newer tools would require quite some time to mature in order to make them a fully-functional alternative.

This is to say that I still find Calendar apps on mobile quite tricky to use as opposed to a fast "point-and-drag" alternative on desktop. I would rather open up a laptop unless I don't have it.