It would vary rep to rep, don't be a fool... wash your hands in it, splash it sure. Don't shower / swim unless you've had it pressure tested. Find a local jewellers (after covid) and ask them if they can pressure test it whilst you wait. It really is the only way.
Yeah ofc i wont take it for a swim or such before a real pressure test. But the question is rather then... Where would i be able to pressuretest it? I mean... does the local watchmaker take it in without seeing its a rep?