Unfortunately the pen is probably USI, making it borderline useless as a pen. This will not be like S-pen or Apple Pencil.
I think this device isn’t so much about a pen. It seems like it could be a really nice typing or coding or reading display. Maybe a future model could improve on the pen
Although I can't find an authoritative source on it the indications do support that assumption that it is USI. Technically USI doesn't have to be bad, it just appears that quality control on the standard is bad (similarly to how USB cables often don't meet the spec and can cause troubles as a result).
Firmware can be checked here: https://gitlab.com/zephray/enchanter