I hope that company kept good backups. I was fortunate that what little I had on the machine in question wasn't lost, save for one encrypted NANO seed that must've been overwritten.
Wasn't much of a loss, 0.3 NANO. Seeing as this was a RAID 0 setup, and a motherboard one at that, I expected the prognosis to be poor, but TestDisk on a Windows 10 USB stick saved me.