That's the main draw I have to try out the BB KeyOne - I can still type faster on my physical keyboard on my Dell Venue Pro than I can my Nexus 6, but if I could swipe on my BBK1, who knows?

The jitter and latency on androids is terrible but I feel like they're more accurate than the iphone for some reason.

My $20 raspberry pi with a cheap USB keyboard has neither problem though...

Yeah, especially since the M8 really killed it in terms of latency: https://forum.xda-developers.com/showthread.php?t=2706200

It seems difficult to make the screen worse than the previous model.