As a full time emergency medical provider I would not recommend anyone mess with sutures or staples in a prehospital setting. You are far more likely to induce infection making everything worse. The zip things are probably safe, but I doubt their usefulness. NONE of these interventions are for bleeding control, which should be your #1 priority.
I always recommend you spend your money on more training instead of gizmos.
I always recommend you spend your money on more training instead of gizmos.