I kind of missed the point I was trying to make there. My original plan was to buy something a bit more serious - and by that I mean larger and bulkier. Something like a Lenovo Yoga 2 Pro, Lenovo Thinkpad Yoga, or a Dell XPS 12 (in about that order). They're 13.3", 12.5" and 12.5" respectively and are more 'traditional' convertibles in the sense that they're notebooks first and foremost - the opposite of the machine I'm typing this on. Each is a traditional chassis with the guts in the lower half, and none have any detachable bits. (The Lenovo machines feature 360-degree hinges, while the Dell has a flippable screen. This means the former two will have the keyboard exposed on the flip-side when in tablet mode, whereas the Dell will have the keys hidden away. The Thinkpad Yoga at least locks the keys rigid when in tablet mode, however.)
Anyway, now armed with some idea of what a more tablet-skewed device is like, I'm probably going to press ahead with my original plan sometime early next year. This device I will likely relegate as a toy I can leave at the office, or I might give it to my sister.
A tangential dilemma is that I'm also in the market for a traditional 14-15" notebook, but I want to try to avoid buying the same brand as the convertible. Which is tricky because I rather like the look of the Thinkpad T440s (or even T440/p and T540p). The alternative here would probably be the Dell XPS 15 with its interesting 3k display.