Reply by CplSteel

I agree with most of the comments above which basically boil down to: you shouldn’t care because if it does fire off the cost of the broken blade is nothing compared to not cutting off your finger.

That said, I don’t have a saw stop (or any table saw yet) but I have done some research and I have two points that may interest you:
1) I would be worried about the cost of a blade if the saw were to accidentally fire because of salt water soaked wood or something, but my understanding is that you can turn the key on the saw stop to disengage the safety system, and when disengaged there is a test method you can do to see if the system would in fact fire on the piece you are cutting.
2) Blades that do get stopped are supposedly repairable.

That said, I would use a good blade and assume that it won’t accidentally fire off and if it does, the cost is little compared to the price of a saw or a new fence (if you run your aluminum fence into the blade it will fire off, but a new blade and soft stop bracket are probably cheaper then a new fence)