Nothing about this is convenient except if your workflow involves you constantly changing keyboard layout for some reason.
A lot of products like this one already exist and do things better, MS Surface, iPad Pro etc.
I don't really understand what niche this fits in except for impulse buyers like myself.
edit: also on last gen there was no way to store the stylus, so I ended up losing it in a week or so. Feels like a pretty big oversight honestly, a problem that could be avoided with a simple pair of magnets.