The new cards are part of Lexar's "Armor" lineup, which already includes ruggedized portable SSDs and other gear designed to withstand harsh conditions. The two new stainless...
Unironically a good idea. I can see these really helping to increase the chances of memory survival in camera applications where the camera has a high chance of being physically destroyed. Also a metal body reallllly helps conduct heat out of the flash, which will increase their lifespan in continuous-write applications.
I feel like dealing with SD cards' inevitable demise is more important than armoring them. What good is a stainless SD card that no longer functions after 2 years of use?