Hey Walz,
Welcome aboard, I guess the usual "welcoming committee" are either busy or sleeping so I will chime in.

I am a bit of a minimalist so a mini Bic in a pocket or PSK does fine for me but the new case is pretty cool especially if you can attach it to a key ring or lanyard.
In general Bics are waterproof. Just dry them out; I have found several Bics in various puddles (on cliffs or in the woods) while climbing and have always been able to salvage them. Just blow into the top and run the striker backwards on your pants a few times and wha-la it will work. I guess if the sparker was really corroded this may not work but if you still have the fuel plus a spark from elsewhere....you can still get fire.
Bill