I carry both. Have never had to use either while fishing, but have used the banger many times while cycling the Highwood Pass. In all but one situation the banger did what it was supposed to, always far enough away that overshooting was not a problem, but I can see that it would be on a stream at closer quarters. On the one other occasion the bear bolted out of sight, so we thought it was gone, but in fact it just moved about 10 feet out of sight behind a tree and went back to grazing the dandelions.
I am thinking an air horn would also be a good addition to the pack or vest.
