IMO, every prepper that can should own a dual purpose bike. It will get you through gridlock on less fuel than anything else except for a bicycle. Have one of those too.
The XL250 was getting kind of heavy for me on rougher and steeper trails. The KE100, although many would laugh at it, is just right. Have numerous other enduro-type as well. They claim the Ke100 gets 70 or 80 mpg but i ride it flat out lol and only makes it to 55 mph