Firstly, welcome to our forum.
....I have used a couple of Panerais into the water and have experienced no problems at all. A nice swim with a Panerai it's what the manufacturer intended

Only thing though, if one plans in swimming/diving regularly for an extended period of time (summer) I would have the water tightness checked beforehand. That's not because Panerai is a particularly delicate watch brand, but because ALL the mechanisms which are water proof, must be checked. IMO of course

Again, welcome. Ciao