you didn't prior to now?? :-))
More fun to have them stashed all over, loaded, ready to grab....even when driving the tractor around the field, or raking the leaves, etc etc. Come to think of it, wearing just one might be cheaper in the long run, but not as much adventurous. Bottom line, watch the approach, always.
Knives at various locations are also a wise investment. You can get stiff bladed razor sharp serrated steak knife sets for not much money, and put them in various spots where they are hidden but easy to reach. This way you have a deadly defensive weapon at reach almost anyplace the home invaders might take you. The moment they are distracted, you have a deadly knife in hand. Naturally, firearms as well, but for the price of a few boxes of bullets you can have a dozen great knives placed here and there, out of sight but in easy reach.