Though I wonder just how practical it really is. I don't know about everyone else but I like to keep my ropes and cords readily available. Weaving paracord into a big braid that takes a while to do and undo seems to defeat the purpose somehow.

Space consideration is also a bit moot. I can compress 10' of paracord into a very small bundle easily. Fits well on a small carabiner attached to my backpack when hiking outdoors, can be deployed instantly. For urban EDC I prefer to keep the paracord inside the pack. Low profile and takes very little room. No more than a fat 10" braid I guess.

As for aesthetics, I don't find paracord braids very sexy. I've done some weird things but I wouldn't be caught dead wearing a paracord braid ankle bracelet. Like somebody else has pointed out already, too much braiding might hurt your sex life... But to each his own!