What do you guys think of it?

Makes good implants.

I just stick with good ole CLP.

Not heavy duty enough for a gun lube.  Great for keeping your window seals from leaking though, and in the form of Camp Dry by Kiwi, great for making boots, jackets, backpacks, etc very water repellant.
It does work pretty well as a nice, dry rust preventative for the outside parts.  Might be ok for the sight assemblies since those aren't really being lubed as much as being protected from moisture.