From that kickstarter:
"The initial prototypes were getting about 8 hours of writing time and we found we can double or triple this in the production version by pulsing the "ON" indicator LED instead of leaving it constantly on. With this, the approximate time is 20 hours, which should last an average of two weeks."
This sounds a lot like 8 hours worth of 8 hours..., if you dont want extra lag.?
Non convenient option to just going with resistive. A tethered stylus could work around this, but that is expensive and more complicated for whatever reason i cant really understand.
Meanwhile resistive is more convenient in that its always gloves free and any stylus goes.
You may have heard the story about how resistive is bad and capacitive is superior. That is comparing apples to oranges, and largely a false consent due to how resistive is at the bottom end cheapest and thus often bad. A good resistive screen is just as "good" as your good capacitive screen. Input lag, CPM etc on anything above good is irrelevant so long as we are still talking about touchscreen here.
With this being a handheld i assume hands are readily available, add to that a little bit of motorical skill, and nubs are indeed superior for mousing if done right, like the thinkpad one.
The keyboard is best used at an angle to the screen, so you end up with monkey arm pretty fast if you want to use input-punching for mouse events and movement.
The use-case for "precision" work, is really touch type things and drawing from what i can tell.
Precision aspects aside (albeit they are a prior concern, and they favour the resistive)
Without resorting to unfeasible technicalities i understand it as a trade-off between pressure sensitivity on one hand, and five finger painting on the other.
Two point touch is a middle-ground, and it can be done on resistive, there are also some seemingly dubious hybrid laser/resistive solutions that aren't really solving a problem anyone had.
One point touch has served me well on the pandora, and for good reason.
the list of things that are generally preferable to using fingers on a non tactile surface for mouse input is long. Mouse, trackball, nubs, gyro, stylus, If any of those are available, having touch in addition quickly becomes a cornercase for usability. Add a point to that and why/why not?
As an extention of that. What is 5(+) finger multi-touch used for? Its cool in some music instrument programs, but novel as a whole. Casual mobile games use it, but any time playing those on a pyra is time better spent on other (read:real) games on the pyra, no? I like to think that the very existence of touch type games are to a large extent the result of not having proper keyboard and mouse input available to begin with.
If the question to someone who has good physical input methods and master them for a given task is: "would you be touching the screen if you could?" It seems as if "no?" is the given answer.
Should the need arise one can always plug in a usb device for drawing, but i don't see the point in a handheld , when the screen can be flat, or as the case is for stationary use, on a table.
TL;DR Anything outside of a 5" resistive is foreign to what a pyra is, or could be.