No, that's what I do now...mostly just out of fear that my gun is going to rust. Looks like that fear is totally unjustified, so will probably carry my P30 out there for now until I get my 45c. My normal carry is a P7 PSP, but will likely not take that out there.I've heard of tupperware guns, but you want a tupperware holster ? I've never seen a "water tight" holster before.
I'm thinking zip lock bag plus a generic ballistic nylon holster. Or maybe you can saran wrap the gun before holstering ?