Should I use NVMe-to-SATA adapters?

[cultOfThinkpad]

I'm looking to buy a couple of SATA SSDs to make a RAID array for my Thinkpad, preferably Samsung 860 Pro SSDs with at least 2TB capacity each.
But I know how expensive they are and yet I notice that NVMe drives like the 980 Pro are much less expensive, especially with 2TB.

I know you can buy NVMe to SATA adapters but I wonder if thats a good idea to use to make RAID Arrays, in Thinkpads or in computers in general.
There has to be a catch to using NVMe to SATA adapters, right?

[axur-delmeria]

M.2 SATA to 2.5' SATA adapters exist, but I've never heard of any adapter that allows one to connect M.2 NVMe SSDs to a SATA port.