In all the years since that type of power adapter has been made by our favorite fruit vendor, I have always used the power cord attached. More versatile. I find that the latest ones (made in the previous two years or so) are made of some kind of stiffer rubbery material and are now more difficult to coil up. (I use a TB Kit to store it... I also love the Snake Charmer - it was my first TB product years ago). I've now swapped out the new cords with the older ones which were easier to handle and pack.
FWIW, I use a Super Ego for all my tech gear ... then again, I'm in the Apple support and consulting business.
Someone please help me!
I have BAS (Bihn Acquisition Syndrome)!!