Well what I am getting from all this is most IBECs and what some of what you guys use is a diode based system. As a diode will only flow energy one direction it sounds pretty safe unless the engergy spike is enough to blow the diode then you just have a dead stick situation. My interest in running the IBEC is mainly a lack of real estate in my new 50cc airplane to mount a switch. The capability of being able to shut down the engine in the event of a linkage failure is appealing as well. I honestly have never had a switch failure in 35 years of R/C. Some have. I have no issues running my system off a single MPI HD switch. If I did want extra security ( And I just might ) then I would run a Smart Fly turbo reg with a smart switch. Knowing that at full throttle and RCEXL ignition is going to draw one amp and that under high flight loads you could draw another 5 or 6 depending on equipment used ( I am using my current 50CC5 servo set up as baseline ) Then I would make sure that the system I have in place will deliver 10 amps with a surge to 15 maybe. The regulator I have is wired with a single input of 16 GA wire and dual outputs of 20 GA. The switch and battery will be 16GA too so I feel I'm good with the 15 amp spike.