Nick/Smokey
I searched about on the world wide web and from what imformation I can gather the FIA suits seem to be of a stand alone standard all by themselves and even though Nicks last years fuelers suit was to standard FIA86 and conforms to EN533 I cannot find anything standard wise that relates to the FIA8856-2000 the one we require this year. 
So my gut feeling is that is exactly what your fueler is going to have to wear or on the other hand you could just buy a bike that can do 4 laps on one tank of fuel