All the smart people leave after a disaster or before a disaster if they can see one heading their way. It doesn't matter how well armed you are or how much gas or water or food you have on hand, you won't want to stay if you get hit with the worst and lose your house or bunker to wind, flooding, radiation, or whatever. If you're smart you're going to pack up your disposable wealth and get out and then assess the situation from a distance to see when the anarchy subsides. Possessions can be replaced. Your life, health, and comfort suddenly mean more than anything you own. So unless you are talking about a global disaster with no where else to run to, all those guns and ammo you stocked up on are only going to slow you down during an evac or have to be left behind for the looters who are too stupid to leave.
The horses have saddle holsters to hold the long guns and I have a waist holster for my sidearm so in the extremely unlikely event that I would have to leave, they aren't going to slow me down at all.