I am a helicopter mechanic in the USCG, and we use similar types of fastners all over the aircraft. One thing to keep in mind is that they wear out pretty frequently. The posts on the fastners often break, and the receptcles will eventually become worn. Another thing is the receptacles are riveted in, so you should keep that in mind. Granted these are taking a serious beating from the aircraft vibrations, and we are constantly removing the cowlings for inspections so we put a lot of wear and tear on them. They also don't keep a good appearance. We also use several on each cowling to keep a tight, secure fit on the aircraft, I imagine that you wouldn't want a whole bunch of these on all your cowlings. Just my opinion.