There is no wicking on the coil itself. Making the coil impossible to replace IMO, unless you really wanted to practice some fine electrical work.
Just FYI, there is most definitely wick in the coils of all of my eRoll atomizers -- in all 40 of the joyetech-branded ones and the 100 knock-offs I've got. It's especially obvious in the knock-offs because they are all really sloppy and not cut precisely.