A sobering read (blatantly copied from Elvex website);
(broken image removed)
^ This is why I always cut wood while on my knees, feet behind me, with my left hand tied behind my back and my face looking totally away from the saw!
I don't set the brake on my saw when moving...my thought is: If the blade happens to contact me, it can freewheel and roll across what ever it contacts, probably causing very little to no damage. If the blade is locked and slides across me, then it's basically a very rough toothed, sharp saw...it's gonna cut something pretty bad.
I guess the argument can be made: IF I drop/fall on the saw...AND something depresses the throttle safety lock...AND something pokes inside the handle...AND something happens to depress the trigger, ALL at the same time THEN I'm worse off. But those are about 4 or 5:1 odds vs the other scenario, so I'll take those chances.