Also, someone carrying a firearm for self defense would NEVER store it in a backpack. Are you going to ask a bad guy if he will wait for you to retrieve your weapon from your backpack? That is just ludicrous.
At the risk of going severely off topic, I would suggest that you can't say that unless you have seen how it is stowed in the backpack. It has been my experience that it is easier to draw from a backpack that's set up for it than it is to draw from an ankle holster.
Also, the backpack could just be for temporary storage while the handgun isn't being worn. It is much less conspicuous carrying a backpack to and from a vehicle than a holstered handgun.
As for the topic being discussed, I can say that I would have no qualms about dating a woman who was a sniper in the military.