Instead of “cut”, attach same size device over tubes, then pinch. Cutting will often result in scarring, and all the other issues with cutting. Implants (like breast) develop scar tissue around them, and likely same with a switch. A switch just SURROUNDING tubes is removable/replaceable.
This “switch” idea sounds GREAT: like something males might not mind!!! Men’s penis is really their gun: they want to be ABLE to shoot and kill, but they don’t mind making the instant choice not to shoot a live round at that time. It sounds better than a male pill, which no man would ever take, or vasectomy, which means their gun no longer has live bullets. Switch means the man is always in control. Men love control.
Please consider a pinching switch instead.