I was talking with some people in my class recently and they mentioned that when you're carrying a bag with a shoulder strap (e.g. duffle bag, sports bag, purse, etc.), you should never wear it with the strap across your body because if it's grabed from behind you get taken off balance with it, whereas if it's just on one shoulder it will slide off. Has anyone else been cautioned of this? Anyway, it got me thinking. I usually wear a bookbag when I go out to carry my stuff in and I wear it with the straps fairly tight because it's better for your back then if it's hanging lower. It holds it closer to your centre of gravity and stuff. But I realized that it's also not easy to get off if someone grabbed it from behind or anything. It also interferes with attempts to do a back breakfall because it would be hitting the ground first and you can't really roll with it on either, a technique that can create a little distance between you and an attacker. But if you wear it loose or just on one shoulder, and you have any weight in it, then it's really hard on your back. Do any of the instructors here deal with this issue in your classes? Have you considered it before? What's your advice? Thanks.