There are many different opinions on this topic about the best method. Most, if not all, of the methods will work. I've rooted cuttings with and without the wax, those that had been stored in the fridge, those that were taken from still actively growing plants, those from dormant plants in the fall, those from dormant plants in the early spring, cuttings that had been cleaned meticulously and bleached with clorox, those that were just cut and stuck in dirt without cleaning, etc etc. Figs are not too picky. The most important thing for success is to get the moisture level right when the rooting process is taking place. Too much or too little will significantly increase mortality rates.
I have never thought about the FMV issue when taking cuttings. Most, if not all, of my cuttings and trees have displayed symptoms at some point, and have lived to tell about it. I think of it like cold sores. They are caused by a virus, and once you have it, it never goes away, just goes dormant inside your body. Comes back every so often, is annoying, but really is not a big deal. More likely to come back if you are stressed, sick, etc. In and of itself will never be a major problem, just a nuisance. Also, very prevalent in the population, and you can't tell a carrier by looking at him/her. Might go away for months/years, but still might come back.
Again, I'm sure there are some who have a different opinion of FMV. So you should form your own opinion. Those are just my thoughts.