Moving to Riyadh, can I bring ecigarettes / eliquids (for personal use)?

There doesn't seem to be much information concerning electronic cigarettes and liquids. Does anyone know whether it is allowed to bring a supply (for personal use) in ones luggage? There does seem to be local businesses selling ecigs/eliquids. If it is allowed, is there an upper limit to the volume of eliquid one can import (again, for personal use)? As I will not be travelling back to EU very often, it is tempting to bring a couple of 500ml bottles of nicotine base (72mg/ml) either Vegetable or Propylene -Glycol. Also various flavor concentrates (PG based)