It's almost a cliche regarding safety equipment that if you don't have it when you need it, you likely won't need it again. I recently ran across this quote from Tom Givens that sums it up quite succinctly.
"You don’t choose when you’ll need your gun; someone else does. And they will typically only inform you at the last moment."
Carry your gun.
See the review of training we took from Tom Givens here.