I found that the tools are indeed stiff, some light oil helps. My blades take an edge nicely, and I've found that the tool works great where the "original" leatherman didn't - specifically with the pliers - you can really crunch tight with a wave.
I ALWAYS have mine - I mean ALWAYS.
No rust - and I've been in the Atlantic AND Pacific ocean with it in. I do rinse it off and clean it at least monthly, and ASAP after salt water.