Since the airline already hands over a vastly more complex and costly item to the Captain on every flight I am amazed at the fuss you are making over one more item of flight deck equipment. The airlines are involved already with the problem whether they want it or not. Tripower you obviously do not read the submissions very well, since you have a trigger mechanism only it is as dangerous as a whizwheel. The other section is useless without the trigger. You hand over nothing to anybody, the trigger mechanism remains in your possesion, a harmless small light part. Upon reaching the cockpit as part of your preflight procedures assemble the equipment and place it in it's assigned position ready should it be required. End of flight dissasemble and stow. Trainning required is minimal, you are not going to be shooting a gnats eye out at fifty paces.
It is dangerous, so is a plane with 400 odd souls on board, life for that matter involves a degree of risk. This problem can certainly be as difficult and problamatical as anyone chooses to make it, but it certainly does not need be as complex or dangerous as some people are making it out to be.