The clear coat will not effect the BMF, however, the foil will look more realistic with out clear coat over it. It is also very easy to accidentally rub through the clear while polishing, and this will usually happen on drip rails etc, if this happens, you will see a difference in the finish of the BMF if it is clear coated. This is just my opinion, others prefer to clear the BMF, it is up to you mate. OH, and the build it looking VERY nice too.