Looking at an x-ray photo of an SD card it doesn't look good... You could always try it as long as you have a way to pop it out. Or maybe in another reader?
I wouldn't risk it in anything expensive. Get a card reader that leaves the micro SD sticking out a bit, and try accessing it with that. At least then if it jams, it's only the cheap reader that you've lost.
It gets recognized by my computer as something, but it can't read the drive and it is unable to be reformatted or anything.
Bummer, but lesson learned. If anyone out there has a Deckmate, be careful with putting the SD cards in the slots and then having it in the steam carry case.