I've been using the hack for quite a while now without any major hiccups. The hack allows you to add (if I remember correctly) 15-25-50 or so slots to a Samsung Evo 512 GB micro sd card. This allows the internal nvme ssd card to be used for storage only. Other ops have claimed the nvme ssd card could be formatted to accept up to 50 slots instead of going the microsd route. This would make the nvme ssd setup a better choice for faster boots and overall image function. But I haven't found the need to replace the microsd with the nvme ssd. I am quite happy with the current setup.
Also, when using any image from the microsd card slot, backupsuite works just fine to make backups to the nvme ssd card. Restoring a backup to the same slot works well too. Hyperion image is an exception to this.
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