Smallest package possible reading microSD I have a project running on an arduino nano, and as part of it, I'd like to read from and write to a microSD card.  My problem is that the microSD shield for it doesn't fit my form factor (think slightly larger than a pen; definitely handheld).

I've purchased a PJS008-2003-0, and I'm wondering, assuming I have the soldering chops, is there any real reason I can't connect this directly?  What does the breakout board get me other than nicer connection points and a blinking light?  Do the example SD sketches rely on anything the shield provides, or will they work for me?
SD card need 3.3v for power and logic level. So most breakouts have a buffer chip to convert the logic levels from 5v to 3.3v. 

PS, you could use an microSD to SD adapter, and solder some wires to its pads, if you are unable to solder the tiny pins on the part you ordered.