The D2K cable is bulky, heavy, and awkwardly long; as far as cables go, it's bizarre the such amazing headphones would be matched with such a cumbersome cable.
However, unlike other physical attributes like how comfortable they are on my head, in regards to how I actually rate/assess my D2Ks, the cable themselves never even comes close to being taken as a 'strike against' the headphones.
The fact is that the D2Ks are designed and marketed solely as hi-fi headphones; using them 'on the go' would present all sorts of challenges, and the gigantic awkward cable being only one of several problems in this area. The assumption is that the D2Ks will used in a stationary and comfortable position, and thus the cable will be a relative non-issue once you get settled into your listening.
Personally, I coiled most of the cord and secured it with a mini ziptie, and this has worked perfectly the entire time I've had them. Yes, this is one of the worst designed cables on a hi-fi headphones, but that's exactly the point because on a h-fi headphones the cable is a rather inconsequential part, and at the end of the day, the D2Ks cumbersome cable has all of ZERO effect on my overall experience with them.