well, just like i figured, bearings causing chains to come off is less likely to happen according to the poll..
as far as swingarm pivots is concerned, mine wont ever go bad because i use polyurethane ones that are tough as nails. bearings in the swingarm pivot to me is just a bad idea. and it seems like the banshee uses really short small ones. my 450 uses a longer bearing on each side, which would even the load out more.
carrier bearings can and will happen, but i disagree with checking it before every ride. if its gonna happen, they will just go.. not gradually wear down to the point its causing chain issues.
i had forgotten i also had a chain pop off due to a rock riding my 450 one time, and also my banshee at a hillclimb. the hill was very rocky and i had come off a jump and landed right on the stupid rock..
sticks may be less likely for most, but people who ride in very wooded areas would probably experience this more.
to say that a chain saver is not necessary if you do routine maintenance is one of the most ridiculous statements ive ever heard. no one plans on their chain failing. lubing it before every ride will not keep it from snapping or being thrown. and checking your bearings before every ride does not negate the need for a chain saver.