No, I've been through quite a few installs, but I've learned to make backup disks just in case. I would die if I had to totally re-install everything.
Doubtful, but if a patch ever comes out, I'll just make another backup disk and put all of my mods on it. Right now, my current backup disk is about 700mb, and that is AFTER I used 7z to compress it.
Yep, the Bismarck camo skin is by Type941. My Nelson Camo skin is also by Type941.
In the fog, it is quite possible to mistaken the two, but the biggest mistake would be to approach a BB on the surface, regardless of German or British.