Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
On the same day, a friend and I both accidentally put a little pressure on the sd card when unplugging something, and "Snap!" went the holder. Fortunately I have a spare, and I'm trying to fix the other one, but this low profile dohicky is a must have in my opinion.
I personally like the Adafruit approach, as it can be used with a case. The other one would be difficult to remove without disassembling the case. If you never need to change, it, I can see the advantages of the other approach.
BTW, I used the Adafruit adapter to fix a broken Pi. The other way wouldn't work, unless you truly never needed to change the card, since it's now glued in!
This is a great little adapter. I don't know why they didn't use a microSD slot on the Pi to begin with, seeing how cramped for space the board is. Besides, microSD flash cards seem to be cheaper and more plentiful than their full-size brethren.