I'd have bought one years ago if I thought it was good for writing. It's orientated to corporate use of PDFs and needs Sony software. The Fujitsu models using the same hardware might be better.
Is it even made or supported now? Sony also often remove drivers, software, firmware and manuals for older products from their website.
There are maybe 3 models, all old:
https://en.wikipedia.org/wiki/Sony_Digital_Paper_DPTS1
Original is only 150 dpi.
Since you have an Elipsa maybe you need to check the FW version.
https://pgaskin.net/KoboStuff/kobofirmware.html
The 4.36.x Elipsa 2 FW seems to run fine on the original Elipsa, though no g'tee.
Download, unzip and copy files and folder into .kobo on the Elipsa. Make sure at least 50% charged. Mac & Linux users need to ensure "hidden" files & folders are displayed.
I actually find the 8″ Sage better for writing (FW 4.35.x). I bought it a couple of weeks after the Elipsa. Previously I'd not been interested in a Forma or Sage as I had a 7″ Libra and 6.8″ Mars, but the writing convinced me. I bought a cheap 3rd party MS Surface pen nearly identical to the Kobo pen for the Sage.
I don't think the Elipsa screen is particularly fragile and I found it better than the reMarkable.
No eink or Tablet is as good for artistic sketching as paper yet. Some of the LCD tablet/digitisers (or screen/digitisers) are getting close. The eink at best only has 16 levels, that's 14 greys, black and white.
Even for digital colouring the initial image is often sketched on paper and then scanned.