I never leave the safety on when manipulating the slide even with the PPK/s (similar to the Bersa).
I have years on the 1911, and it is a habit I've carried over to other platforms.
Once everything is setup, then the safety goes on.
The PPK/s uses the safety to activate the hammer decock. Safety on once, the hammer goes to "rest" position. Safety off, and then back on, moves the trigger to the ready position. Then safety on for carry.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)