Yeah, TP is pretty handy as is hand sanitizer and a digging implement, but I don't consider it "emergency" gear although with certain types of gastro-intestinal conditions maybe I should.  
Won't argue with a good backpack although good footwear in my mind is even more important.  As for a handgun, I suppose it depends on the laws in your area as well as the situation.  I've never found the need for nor have I been willing to carry the weight of a firearm and ammo.  Well, not since I left the army anyway.  Nothing like a 23lbs M60 and multiple belts of ammo.  Dang I wish I still had knees now like I had back then.  

HJ