point of using the edk is it is low profile and doesnt get stuck...backing it up with another knot it makes a bigger clump, more chance of getting stuck... what is sketchier, rapping off a single EDK or jumaring back up a stuck rope when your big clusterfuck of a knot gets stuck... HMMMMMMMMMM tough one
as for jason's edk for cordellettes, hmmm, i DONT want mine to accidentally untie thats why i use the double fish instead of an "easier to untie" knot !