[abdullahkhalids]

That seems strange. You can use the pen on it, and the screen changes near instantly. There is not much of a lag. I would think that typing would be almost as good.

Edit: I see this guy typing here, and the latency doesn't seem horrible. Probably equivalent to the latency of an actual mechanical typewriter. https://youtu.be/R8VG6dQkTwI?si=_YWK7-fLw7MhS1Vv&t=2226

Of course, this folio keyboard looks horrible.

[RBerenguel]

Writing latency on the RM is good: for typing is very likely to be well above OK… as long as you don't have to scroll the text/screen. Because page turning latency/refresh speed is quite bad. No "this is shitty bad, gimme my money back" but slow enough that it makes skimming impossible and normal page turning slightly annoying (worsened the larger the PDF). A similar kind of latency can be seen particularly when using the cut/move tool, for example.

To be fair when typing (a few minutes after the time in the video you shared) the latency for refreshing the screen does not seem that bad. But they keyboard looks annoying to use… I way prefer having a full choice of keyboards (aside from the fun of having written the code of course).

Typing latency on my contraption is pretty similar to what can be seen in the video, maybe slightly slower but not by much. Since two weeks ago I have written several drafts of blog posts (while I added some features that were needed, or fixed some annoyances) and it is usable, although I miss adding a "read mode" (scrolling via cursor is slow, and I have not added `:num`, `gg` or `G` yet which makes reading what you have written not great.