CC has the best set up on this.I really find mine more of an annoyance than a safety feature.
It is true that you only need to pull up as you depress the reverse pedal, you don't have to hold it. However, if you let go of the pedal and depress it again, the mower cuts out.
Well I often mow in tight quarters and this gets really annoying. I have to keep reaching forward to pull the lever and that takes my hands off the wheel and shifts my right shoulder forward.
Some interlocks are more practical than others...