Need to keep pressing the unlock button on a reciprocating saw: is that typical?
The trigger lock is a mechanical safety mechanism that prevents the trigger from being pulled.
It needs to be depressed before the trigger can be pulled.
I would not activate the two buttons at exactly the same time, because I do not know it that would cause any wear on the unlock mechanism.
The trigger lock button is only used to allow the trigger switch to be pulled, so it does not have to be held when the trigger is pulled.