Regardless of the multitude of audio and visual warnings - a positive, from memory, check of gear and brakes is essential, and both pilots in a multi crew scenario should be doing it.
It was SOP for the ( NFP/ PM/ whatever the term in use ) and in 76 and 92 …your hand followed the check. you touched the parking brake handle, verified 3 green gear, verified floats, radar, pointed you right hand at the deck or runway and said “Final Checks Complete”.
Being an ex fixed wing taildragger guy some helicopter folks commented when I pumped the brakes during the pre-landing checks when landing on a runway to verify brake pressure. ( pressure up and equal )
One TRI instructed me to stop doing that as it was not SOP.
We had a discussion about why I did it when we debriefed back on the ground …he never mentioned it again.