@AlexBravo - the usual that we talked about and I stalled on before - MCC, letter combos. Single letters are ok. It's the combos I get lazy on.
@SanjeevKumarSharma - I laid out my reasons for wanting untethered chording, preferably with the option of a one-line screen for quick checking (though this is not a dealbreaker as the below makes clear), some months ago on the forum. I can't access the link now but I will try to fish it out and relink later. The quick answer is - there's a very specific kind of (often 'creative') writing and note-taking that works best without writing into a screen, or speaking out loud, but relying on the completely non-conscious interface of muscle-memory. So you can write paragraphs silently, while out walking with a hand in a pocket.
It's not unrelated to the kind of stream-of-consciousness writing the cloud-service screenless (or minimally screen-using) typewriter 'Hemingwrite' is touting for creative writers - to immense excitement! - except even more unmediated and immediate.
The resulting text would be typo-riddled doubtless but could be tidied up with a word processor later.
I acknowledge of course that it may be a very minoritatian desire and not worth the development time but my hunch is that if it were instituted, a non-trivial minority of (mostly creative) professional writers would discover it to be an incredibly useful new mode if writing - basically, that they need to try it to know they want it. (Me, I know already.)
Basically I am DYING for TekGear to institute untethered chording - one person there I spoke to even suggest edit might be possible with a firmware tweak on the Twiddler 3, without new hardware. I live in hope. I've tried workarounds like tethering yo my phone then putting the phone in the pocket etc but if the tethering glitches or anything you lose reams of text without knowing it. Trusting that it's going into the Twiddler for later processing would be an absolute game changer for me.