Thumbnails for CaptureOne EIP files

[justgimmethatplugin]

So... Capture One, a RAW photo-editing program, exports its edited RAW files into zip-like EIP package files - and, while XnView can open those without a problem, showing you the included-therein RAW file (or, actually, its preview) upon doubleclicking an EIP file, it seems to not be able to generate thumbnails for these container files. And these EIP files are really darn handy for archiving your RAWs while preserving all the editing changes (apparently Lightroom calls this technology "sidecar" something).

So... is there possibly a way to enable XnView to show thumbnail previews for these EIP-zipped-up RAW files, somehow? Allegedly Windows can show the thumbnail previews for those with no problem (I personally have win thumbnails disabled), so I would imagine it... should not be too much of a problem to convince XnView to do so as well?

[xnview]

please send me a sample file

[justgimmethatplugin]

I can try to generate an EIP from some old RAWs that I have if this file is too big; my current camera produces them in a bit of a bulky size. Here's a wetransfer download link: https://we.tl/t-X2P0jfthJf
(This is the cloud service I usually use for quick-sharing files with clients; do tell if I should link it elsewhere instead.)

My XnView associates with and opens these files immediately with no problem and it would be an absolute delight if it could produce in-program thumbnails for them as well. Much obliged for the reply, and thank you for your software!

edit: lighter EIP from older, smaller RAW file included here: https://we.tl/t-PmkxczjyRz