Trying to set one up right now with this hardware:
1 x Cable Matters 10Gbps Aluminum Dual Bay 2.5 Inch External SSD Enclosure (USB C Enclosure) with USB-C and USB-A Cables Supporting RAID 1 and RAID 0 - Thunderbolt 3 Port Compatible
2 x Crucial BX500 2TB 3D NAND SATA 2.5-Inch Internal SSD, up to 540MB/s - CT2000BX500SSD1
Video: https://youtu.be/Oj_zrBlLf_o
I went to bed as the formatting of the RAID1 disk was just getting started. I formatted it with LUKS (password protected linux format). I would rather have to re-enter a password everytime it reboots than worry about a thief getting away with snatching the physical drive.
I’ll try to post more here with the further results as things progress.