Earlier quoted context omitted.
Only Apple iPads or are you using the term generically? I'm guessing you're in London or another major city? Similar to the parent I only ever see iPads in two places, the hands of rich kids in restaurants, and in primary schools.
Only Apple iPads as far as I could see, but by no means only the most expensive or newest. Non-Apple tablet devices really are not often seen in the UK (some convertible PCs, the occasional Samsung tablet). If you spend a lot of time on public transport, an iPad isn't really that much of a luxury item. It's a really pragmatic choice, and at least in the UK an entry-level or recent secondhand iPad is not much more exp…
That said, I'm going on a few week--mostly recreational--trip in a bit and I'll just take my phone and my iPad. It will be fine for note-taking at the conference I'm attending and I really just want media consumption and a browser on something bigger than my phone for everything else.
An iPad is probably one of my more optional devices but I've gotten almost 10 years out of my current model so it doesn't feel like an unreasonable luxury even if I mostly use it when traveling.