This is why I've been evangelizing Chromebooks recently; they run android apps now, so if you get a small flip-folding one, it's basically a tablet with a hinged keyboard built in.
And a linux chroot that can surface X windows to chrome browser tabs, if you're willing to turn on developer mode.
I'm a big fan of the Asus Flip (and will likely either upgrade to the new model or to the Samsung). It's increasingly my go-to travel machine. But I find it awkward as a tablet. I usually carry my old iPad with me even when I bring the Chromebook.
And a linux chroot that can surface X windows to chrome browser tabs, if you're willing to turn on developer mode.