Another Gunzilla user here. It seems to work as well as Hoppe's #9 or Benchrest as far as bore a cleaner, IME. Also seems to do the job as a protectant, but my guns aren't subjected to any extreme conditions as a rule.
I originally bought it so that I wouldn't have to hear "What's that smell?" whenever I cleaned my guns indoors.
Outside, I still use the Benchrest for cleaning; mostly because I bought the BIG bottle some years back.