Veteran journalist Charles Arthur’s MacBook Pro broke, so he started doing his job on an iPad Pro:
A few years ago, this would probably have been impossible. I wouldn’t have contemplated it. Now? Getting along fine. In a number of ways, the iPad is preferable - particularly weight and connectivity. In only a couple of ways is it worse (the most notable being “lappability”).
The ability to use a tablet and attached keyboard comfortably in your lap (and not on a table) is definitely an issue; these days I travel with the Brydge Keyboard, which lets me use my iPad in a laptop configuration when I want to.
In any event, Arthur’s piece is a great overview of the pros and cons of working on an iPad, including using cloud syncing and tools such as Workflow and Pythonista to automate building his newsletter.