I have several pair of Knipex wire/bolt cutters that I keep in my boat for cutting the big treble hooks out of fish. They are nice and expensive cutters, but they get wet in the boat, and stored in a wet environment, so they inevitably begin to rust a bit.
I have the spray MoS2 from Kano Labs and have used it on multiple occasions to "coat" areas that I've cleaned rust off it.
It's worked GREAT.
Yes, it sticks VERY, VERY well. Like paint.