I thought of something that would have been awesome..
What if every time you honked your "gjaller horn"
IT WOULD STUN AND DISORIENT ENEMIES WITH ITS SHEER AWSOMENESS!!!
Imagine... You see a small group while patrolling.. You speed head first on your iron steed honking you horn signalling your battle that's about to begin and the splicers are overwhelmed with auditory overload and become confused and stunned!!
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Of course it would be proximity based. You'd have to be relatively close for the disorientation to happen.