@agx Oh this is dangerous. One could probably experiment endlessly.
Tried osk-stub, and it's a good keyboard out of the box, but couldn't get a decent result out of swipeGuess with it. And it just vomiting every letter I slide over, in the very off chance that one of the suggestions is correct, is far from ideal.
I'm sure there's tweaking to be done there, but came across wvkbl, which allows repeated pipes, and I figured that would be more versatile. It's also just a ridiculously snappy kbd.